Since vs. sense is a common English word-choice confusion because the two words sound similar but have completely different meanings and grammatical functions. Since is mainly used to refer to a starting point in time or to give a reason, while sense relates to perception, understanding, meaning, judgment, or awareness. Choosing the correct word depends on what you are trying to express.
The confusion is especially common in writing because since and sense are close in pronunciation. However, they cannot normally replace one another. You might write, “I have lived here since 2020,” but “That doesn’t make sense.” Using the wrong word can change the meaning of a sentence or make it grammatically incorrect.
The good news is that the distinction is easy to learn once you focus on meaning and function rather than sound. This guide explains the different uses of since and sense, shows how they work as different parts of speech, covers common mistakes, and provides practical tests for choosing the right word.
Quick Answer: Since vs. Sense
Since and sense are different words with different meanings.
- Since can refer to time: from a particular point in the past until another time, often the present.
- Since can also introduce a reason: because.
- Sense can refer to a physical or mental perception.
- Sense can mean understanding, meaning, judgment, or awareness.
- Sense can be either a noun or a verb, depending on how it is used.
| Word | Main meanings | Example |
|---|---|---|
| Since | From a past time; because | “I have worked here since 2020.” |
| Sense | Perception; understanding; meaning; judgment | “That explanation makes sense.” |
The easiest memory trick
Ask yourself:
Am I talking about time or a reason? → since
Am I talking about perception, understanding, meaning, or judgment? → sense
For example:
- “She has lived here since 2015.” → starting time
- “That doesn’t make sense.” → understanding or logic
- “Since you’re already here, let’s begin.” → reason
- “I could sense that something was wrong.” → perception
What Does “Since” Mean?
Since has two major uses in modern English: it can refer to time, or it can introduce a reason.
It can function as a preposition, conjunction, or adverb, depending on the sentence.
Since for Time
When since refers to time, it identifies the point at which something began.
I have lived here since 2018.
The sentence means that the person started living there in 2018 and continued living there afterward.
The starting point can be:
- A year: since 2018
- A month: since June
- A day: since Monday
- A specific event: since the accident
- A particular moment: since breakfast
- A clause: since I moved here
Examples:
She has worked at the company since 2021.
We haven’t spoken since last week.
He has been feeling better since the operation.
I haven’t seen them since they moved away.
Since and Perfect Tenses
When since introduces a starting point that continues to a later time, it frequently appears with the present perfect or present perfect continuous.
I have known Maria since 2010.
They have lived here since January.
She has been studying since early morning.
The important distinction is between a starting point and a duration.
Compare:
- since Monday → starting point
- for three days → duration
I have been sick since Monday.
I have been sick for three days.
This is one of the most useful grammar distinctions to remember.
| Expression | What it tells you | Example |
|---|---|---|
| since + starting point | When something began | “since 2020” |
| for + period of time | How long something has continued | “for six years” |
Since for a Reason
Since can also mean because.
Since it was raining, we stayed home.
Here, since has nothing to do with time. It introduces the reason for staying home.
More examples:
Since you’re already here, we can start the meeting.
Since I had finished my work, I decided to leave early.
Since the store was closed, we went somewhere else.
In these sentences, you can generally replace since with because without changing the basic meaning:
Because it was raining, we stayed home.
Because you’re already here, we can start the meeting.
However, since can sometimes be less direct than because. If there is a possibility that readers could interpret since as a time reference, because may provide greater clarity.
What Does “Sense” Mean?
Sense has several related meanings involving perception, awareness, understanding, meaning, and judgment.
It can function as both a noun and a verb.
Sense as a Noun: Physical Perception
A sense can refer to a faculty through which a person or animal perceives the world.
The commonly taught five human senses are:
- Sight
- Hearing
- Smell
- Taste
- Touch
For example:
The smell of fresh bread appealed to my sense of smell.
Our sense of hearing can change with age.
The word sense can also be used more broadly for other forms of perception or awareness:
She has a good sense of direction.
He has a strong sense of balance.
I had a strange sense of danger.
Sense as Understanding or Meaning
Sense can describe whether something is understandable, logical, or meaningful.
This is the meaning in the common expression make sense.
Your explanation makes sense.
That doesn’t make sense.
Now I understand what you mean; it finally makes sense.
Here, sense does not refer to one of the five physical senses. It refers to meaning, logic, or intelligibility.
Sense as Judgment or Practical Intelligence
The word can also refer to someone’s ability to make sensible decisions.
She has good common sense.
You need some financial sense when managing a budget.
He showed excellent business sense.
In these examples, sense is related to judgment or practical understanding.
Sense as Awareness
Sense can describe an awareness or feeling about a situation.
I had a sense that something was wrong.
She felt a growing sense of responsibility.
He experienced a sense of relief after the exam.
Here, the word describes an internal awareness, impression, or feeling.
Sense as a Verb
Sense is also a verb meaning to perceive, detect, or become aware of something.
I could sense that she was nervous.
The dog sensed danger.
The device can sense movement.
He immediately sensed tension in the room.
As a verb, sense often describes detecting something that may not be directly stated or easily visible.
Compare these two uses:
I have a sense that something is wrong.
I can sense that something is wrong.
In the first sentence, sense is a noun. In the second, it is a verb.
| Form | Grammatical role | Example |
|---|---|---|
| sense | Noun | “I had a sense of danger.” |
| sense | Verb | “I could sense the danger.” |
| sensed | Past-tense verb | “She sensed something unusual.” |
| sensing | -ing form | “He is sensing a change.” |
Since vs. Sense: The Key Differences
The clearest way to distinguish the words is to focus on their meaning and grammatical role.
| Feature | Since | Sense |
|---|---|---|
| Main idea | Time or reason | Perception, meaning, understanding, judgment |
| Common part of speech | Preposition, conjunction, adverb | Noun, verb |
| Time-related? | Yes | No |
| Can mean “because”? | Yes | No |
| Can mean perception? | No | Yes |
| Common expression | “since 2020” | “make sense” |
| Verb use | No | Yes: “sense” |
| Example | “I’ve known her since 2015.” | “I sense something is wrong.” |
A useful way to remember the distinction is:
Since connects events to time or cause. Sense connects people to perception, meaning, or understanding.
Since vs. Sense in Example Sentences
Seeing the words in different contexts makes the difference easier to recognize.
Examples with “Since”
I have lived here since 2019.
Meaning: The person began living there in 2019.
We haven’t eaten anything since breakfast.
Meaning: Breakfast was the starting point of the period.
Since you finished early, you can help me.
Meaning: Because you finished early.
She has been happier since she changed jobs.
Meaning: Her improved state began when she changed jobs.
Examples with “Sense”
That explanation doesn’t make sense.
Meaning: It isn’t logical or understandable.
I could sense that he was upset.
Meaning: I could perceive or detect his emotional state.
She has a strong sense of responsibility.
Meaning: She has a strong awareness or feeling of responsibility.
He has excellent common sense.
Meaning: He generally makes practical and sensible decisions.
Common Mistakes with Since and Sense
Because the words sound similar, spelling errors are easy to make, particularly when writing quickly.
Mistake 1: Using “Sense” for a Starting Time
❌ Incorrect:
“I have lived here sense 2020.”
✅ Correct:
“I have lived here since 2020.”
Why: The sentence identifies a starting point in time, so since is required.
Mistake 2: Using “Since” in “Make Sense”
❌ Incorrect:
“That doesn’t make since.”
✅ Correct:
“That doesn’t make sense.”
Why: The expression make sense means “be logical,” “be understandable,” or “have a clear meaning.” The correct spelling is sense.
Mistake 3: Confusing “Sense” and “Since” as Verbs
❌ Incorrect:
“I can since something is wrong.”
✅ Correct:
“I can sense something is wrong.”
Why: Sense is the verb meaning “detect” or “become aware of.” Since does not have this meaning.
Mistake 4: Using “Since” When You Mean “Sense”
❌ Incorrect:
“She has a good since of humor.”
✅ Correct:
“She has a good sense of humor.”
Why: The phrase refers to her ability to appreciate or understand humor, so the noun is sense.
Mistake 5: Confusing “Since” with “For”
This is a different mistake, but it often appears when people are learning how to use since for time.
❌ Incorrect:
“I have lived here since five years.”
✅ Correct:
“I have lived here for five years.”
Or:
✅ “I have lived here since 2021.”
Why: Since normally introduces a starting point, whereas for introduces a length of time.
Since vs. Because: Are They Always Interchangeable?
When since introduces a reason, it can often be replaced by because, but the two words do not always have exactly the same emphasis.
Compare:
Since the store was closed, we went home.
Because the store was closed, we went home.
Both sentences explain the reason.
However, because is usually the clearer choice when the cause is the central point of the sentence. Since can also introduce a time clause, so in a sentence with potential ambiguity, because can remove doubt.
For example:
Since I moved here, I’ve made many friends.
This clearly refers to time.
But:
Since I was tired, I went home.
This clearly means because, although context ultimately determines interpretation.
If precision matters, choose the word that makes the intended relationship immediately obvious.
Since vs. For: A Useful Related Distinction
Learners sometimes understand since and sense correctly but still confuse since with for.
The basic rule is:
- since + starting point
- for + duration
Compare:
I’ve worked here since 2020.
I’ve worked here for six years.
She has been waiting since 8 a.m.
She has been waiting for two hours.
A starting point answers “From when?” A duration answers “How long?”
| Word | Followed by | Example |
|---|---|---|
| since | Starting point | since Monday |
| for | Length of time | for three days |
This distinction is separate from the since vs. sense spelling problem, but learning it can prevent another common error.
Common Expressions with “Since”
Some familiar expressions can help you recognize since quickly.
Ever since
Ever since emphasizes that something has continued from a particular point in the past.
I’ve loved reading ever since I was a child.
She has felt more confident ever since she started the course.
Since then
Since then means “from that time until the relevant later time.”
We met in college and have stayed friends since then.
Since when?
Since when? is often used to ask when a situation began, sometimes with surprise or skepticism.
Since when have you been interested in photography?
It can also have a conversational tone that implies the speaker did not expect the change.
Common Expressions with “Sense”
Many fixed phrases contain sense, making the correct spelling easier to remember.
Make sense
Means to be logical, understandable, or reasonable.
Your explanation makes sense.
Common sense
Means practical judgment.
Use your common sense before making a decision.
Sense of humor
Refers to someone’s ability to recognize and appreciate humor.
She has a great sense of humor.
Sense of direction
Refers to the ability to know where you are and how to find your way.
I have a terrible sense of direction.
In a sense
Means “in a particular way” or “to some extent.”
In a sense, both answers are correct.
Sense of responsibility
Refers to an awareness of one’s duties or obligations.
He has a strong sense of responsibility toward his team.
Why Are Since and Sense So Easy to Confuse?
The primary reason is similar pronunciation.
In many varieties of English, since and sense are pronounced alike or very similarly:
- since /sɪns/
- sense /sens/
Their spelling is different, but their sounds can be close enough to cause problems when someone has mainly learned the words through conversation.
This is an example of a broader English spelling challenge: words can sound alike or nearly alike while having completely different meanings and spellings.
The solution is to connect each word with its meaning and common patterns, rather than trying to distinguish them by sound alone.
A Simple Test for Choosing Since or Sense
When you’re unsure, try one of these tests.
Test 1: Can You Replace It with “From a Time”?
If yes, use since.
I have worked here since 2020.
→ I have worked here from 2020 onward.
Test 2: Can You Replace It with “Because”?
If yes, use since.
Since it was late, we went home.
→ Because it was late, we went home.
Test 3: Does It Mean Understanding or Logic?
If yes, use sense.
That doesn’t make sense.
→ That doesn’t seem logical.
Test 4: Does It Mean Detect or Perceive?
Use sense.
I could sense that she was worried.
→ I could detect that she was worried.
Test 5: Is It Part of a Fixed Expression?
Common phrases such as make sense, common sense, sense of humor, and sense of direction take sense.
Memory Trick: Since Has Time; Sense Has Meaning
A simple memory aid is:
Since = starting point or reason
Sense = perception or understanding
You can also associate sense with the five senses:
sight → sound → smell → taste → touch → sense
Then expand the idea from physical perception to mental understanding:
“That makes sense.”
For since, imagine a timeline:
Past starting point → since → later time
2020 → since → now
This visual distinction is often more reliable than trying to remember the spelling in isolation.
Since vs. Sense: Correct or Incorrect?
| ❌ Incorrect | ✅ Correct | Reason |
|---|---|---|
| I have lived here sense 2020. | I have lived here since 2020. | Since marks a starting time. |
| That doesn’t make since. | That doesn’t make sense. | Sense means logic or meaning. |
| I can since something is wrong. | I can sense something is wrong. | Sense is the verb meaning detect. |
| She has a good since of humor. | She has a good sense of humor. | The fixed expression uses sense. |
| I’ve worked here since five years. | I’ve worked here for five years. | For introduces a duration. |
Do Since and Sense Have Different Word Origins?
Yes. Their histories are unrelated.
Since developed from an Old English expression associated with the idea of “after that” or “from then.” Over time, its uses expanded to include the modern time and reason meanings.
Sense comes through French from Latin sensus, related to sentire, meaning “to feel” or “perceive.” This history connects naturally with its modern meanings involving sensation, perception, and understanding.
You do not need to memorize these etymologies to use the words correctly, but they help explain why the two words are spelled differently despite their similar sound.
Conclusion
The difference between since and sense becomes much easier once you stop relying on their similar sound and focus on what each word means. Use since when you are referring to a starting point in time or introducing a reason equivalent to because. Use sense when you mean perception, awareness, understanding, logic, or judgment. Remember the especially common expressions make sense, common sense, and sense of humor, all of which use sense.
One final actionable tip: whenever you hesitate, replace the word mentally with “from that time” or “because” for since, and “perceive” or “understand” for sense.
A common mistake to avoid: don’t write sense in time expressions such as “since 2020,” and don’t write since in expressions such as “make sense.” A quick meaning check can prevent both errors.
FAQs
Q1. What is the difference between since and sense?
Since is used mainly for a starting point in time or to introduce a reason meaning “because.” Sense refers to perception, awareness, meaning, understanding, or judgment. For example, “I have lived here since 2020” uses since, while “That makes sense” uses sense.
Q2. Is it “make sense” or “make since”?
The correct expression is “make sense.” It means to be logical, understandable, or reasonable. For example, “Your explanation makes sense.” Although sense and since sound similar, since cannot be substituted in this fixed expression.
Q3. Is it “since 2020” or “sense 2020”?
The correct phrase is “since 2020.” Since identifies the point at which something began. For example, “She has worked here since 2020.” Sense has meanings related to perception and understanding and cannot be used to introduce a starting time.
Q4. Can since mean because?
Yes. Since can function as a conjunction meaning “because.” For example, “Since it was raining, we stayed home” means “Because it was raining, we stayed home.” When the reason needs especially clear emphasis, because can sometimes be the better choice.
Q5. How can I easily remember since vs. sense?
Associate since with a timeline: it can identify when something started, such as “since Monday.” Associate sense with perception or understanding: “sense of smell,” “sense of humor,” and “make sense.” If you mean time or because, choose since; otherwise, consider sense.