make since (sense)

Short answer: "make since" is incorrect. Use "make sense" when you mean something is logical or understandable.

Below are the key rule, compact explanations, targeted examples (work, school, casual), ready-to-paste rewrites, micro-grammar notes, and a memory trick to stop the mistake.

Quick answer

"Make since" is wrong. Write "make sense." "Sense" = meaning or logic (noun). "Since" = time or cause (conjunction/preposition).

Incorrect: His explanation didn't make since.
Correct: His explanation didn't make sense.
If you mean "be logical" or "be understandable," use "sense."

Core explanation: why "make since" fails

"Make sense" pairs the verb make with the noun sense to mean "be logical" or "be understandable." "Since" is a time/causal word and cannot function here as a noun meaning "meaning."

Correct structure: make + noun (make sense, make progress).
"Since" marks time or cause (since 2018, since we agreed).
Swapping categories (verb + conjunction) produces a meaningless phrase: "make since."

Hyphenation, spacing, and micro-grammar notes

Write "make sense" as two words. Do not run them together or hyphenate in normal usage.

Correct: make sense (two words).
Avoid: makesense, make-sense in ordinary sentences.
When you need an adjective before a noun, prefer "sensible" or "that makes sense" instead of "make-sense": e.g., "a sensible solution" or "a solution that makes sense."

Real usage: formal vs. casual settings

Use "make sense" in both speech and writing. In formal work (reports, proposals, academic papers) it's the right, standard phrase. In conversation, substitute the single word and keep the sentence clear.

Formal: "The proposal does not make sense; please clarify the assumptions."
Casual: "Okay, does that make sense?"
When correcting someone, point to the unclear part: "This part doesn't make sense-can you show how you got that?"

Examples - common wrong/right pairs

Six quick swaps you can scan or copy.

Wrong: That doesn't make since to me.
Right: That doesn't make sense to me.
Wrong: The schedule didn't make since; we missed steps.
Right: The schedule didn't make sense; we missed steps.
Wrong: Does that make since for you?
Right: Does that make sense for you?
Wrong: It doesn't make since that they'd agree.
Right: It doesn't make sense that they'd agree.
Wrong: This result doesn't make since with the hypothesis.
Right: This result doesn't make sense with the hypothesis.
Wrong: His reason didn't make since at all.
Right: His reason didn't make sense at all.

Work (office) examples and ready rewrites

Professional rewrites keep tone clear and actionable.

Wrong: His explanation didn't make since; we'll proceed.
Right: His explanation didn't make sense; we need additional details before proceeding.
Wrong: The proposal doesn't make since in terms of ROI.
Right: The proposal doesn't make sense in terms of ROI. Please include projected returns and assumptions.
Wrong: If his explanation didn't make since, escalate to management.
Right: If his explanation didn't make sense, escalate to management with the specific unclear points.

Try your own sentence

Test the whole sentence rather than the single word-context decides whether "sense" or "since" fits.

School (academic) examples and teacher feedback

Clear corrections plus guidance help students learn the difference.

Wrong: The teacher said the answer didn't make since.
Right: The teacher said the answer didn't make sense and asked the student to show their steps.
Wrong: Her essay doesn't make since to the reader.
Right: Her essay doesn't make sense to the reader; reorganize the claims and add transitions.
Wrong: His explanation didn't make since in my notes.
Right: His explanation didn't make sense in my notes; can you restate the key point?

Casual and chat examples

In texts and conversations, a one-word swap fixes it instantly.

Wrong: That story doesn't make since.
Right: That story doesn't make sense.
Wrong: He explained it, but it didn't make since.
Right: He explained it, but it didn't make sense.
Wrong: The joke didn't make since.
Right: The joke didn't make sense.

Rewrite help: quick templates you can paste

Choose the tone you need and paste one of these.

Neutral swap: "X didn't make since" → "X didn't make sense."
Polite ask-for-clarity: "X didn't make sense to me; could you clarify [specific part]?"
Formal note: "X does not make sense given [reason]. Please revise accordingly."

Original: "His explanation didn't make since." Rewrite (neutral): "His explanation didn't make sense." Rewrite (polite): "His explanation didn't make sense to me; could you explain step 2 in more detail?"
Original: "That doesn't make since." Rewrite (casual): "That doesn't make sense-can you show how you got that number?"
Original: "Her point didn't make since." Rewrite (formal): "Her point was unclear and did not make sense in the context of the argument; please clarify."

Memory trick and practice drills

Two quick checks and a 60-second practice make the correct choice automatic.

Mnemonic: "sense" and "sensible" share a root-if you mean logical/useful, choose "sense."
Quick check: If the sentence answers "Is it logical?" → use "sense." If it answers "When?" or "Because?" → use "since."
Practice drill (1 minute): scan three recent messages or notes and replace any misuse of "since" where you meant "sense."

Similar mistakes to watch for

Words that sound right but are different parts of speech often cause errors. Identify the intended meaning, then pick the correct word.

"For all intents and purposes" (not "for all intensive purposes").
"Couldn't care less" (not "could care less," when you mean no care).
"Irregardless" → use "regardless."
"Affect" (verb) vs. "effect" (noun) - check the part of speech.

Wrong: For all intensive purposes, the test was hard.
Right: For all intents and purposes, the test was hard.
Wrong: I could care less.
Right: I couldn't care less. (if you mean you don't care at all)

FAQ

Is "make since" ever correct?

No. If you mean "be logical" or "be understandable," use "make sense."

Why do people type or say "make since"?

Mostly slips: "since" is common and can sound like "sense" in some accents. Fast typing, autocorrect, or mishearing also cause it.

How do I quickly fix a sentence that uses "make since"?

Replace "since" with "sense." If helpful, add a short clarification: "It didn't make sense to me; could you clarify step 2?"

Can I use "make sense" in formal writing?

Yes. "Make sense" is standard. For extra formality choose alternatives like "is not logical," "is unclear," or "lacks coherence."

Any quick proofreading tip to catch this and similar errors?

Ask: "Is this about time/causation or meaning/logic?" If meaning/logic → expect "sense." If time/causation → "since." Do a one-minute scan for confusable words before sending.

Want a quick check before you send?

A brief proofreading pass or a quick grammar check will catch slips like "make since" and save embarrassment.

Paste a sentence into a checker or read it aloud and ask whether it answers "when/because" or "is it logical?" That split-second test catches most mistakes.