rather/other/different then (than)

Writers often type then when they mean than-especially in short comparative phrases like "rather than," "other than," or "different than." That small slip changes meaning and looks like a basic error.

Below: a short rule, quick checks, many paired fixes for work/school/casual writing, and copy-ready rewrite templates so you can correct sentences fast.

Quick answer: use than for comparisons, then for time and sequence

Use than for comparisons (bigger than, rather than, other than). Use then for time, order, or consequence (then = next / after that / therefore). They are not interchangeable.

Than = comparison (She is taller than I am).
Then = time/sequence/consequence (First we eat, then we leave).
Quick test: if "compared to/with" fits, use than. If "after that" or "next" fits, use then.

Core explanation: what each word does

Than is a conjunction for comparisons-degrees, preferences, contrasts. Then is an adverb (sometimes adjective) that marks time, sequence, or result.

When you mean "in comparison to," pick than. When you mean "after that" or "at that time," pick then.

Comparison? Use than. Sequence/time/result? Use then.
Fixed comparative phrases prone to error: rather than, other than, different from / different than.

Wrong: She is more experienced then him.
Right: She is more experienced than him.
Right (time): We finished work, then we went home.

Spacing and fixed comparative phrases (where mistakes cluster)

Typos appear often in short, fixed phrases because writers habitually type the more frequent word then. Correct forms: rather than, other than. For "different," many style guides prefer different from, though different than is common in informal American English.

Treat "different then" as incorrect when you mean comparison; it should be different from or different than (depending on register).

Common typos: "rather then", "other then", "different then".
Preferred: "rather than", "other than". Use "different from" in formal writing; "different than" is acceptable informally, especially before clauses.

Wrong: I chose coffee other then tea.
Right: I chose coffee other than tea.
Wrong: His approach is different then mine.
Right: His approach is different from mine.

Grammar test: quick sentence-structure checks

If unsure, rephrase. If "compared to/with" fits naturally, use than. If "after that" or "next" fits, use then.

Another check: is the phrase linking two things (comparison) or linking actions/events (sequence)? Linking things → than. Linking actions → then.

Test 1: Swap in "compared to/with" → if it works, use than.
Test 2: Swap in "after that"/"next" → if it works, use then.
Test 3: Preference → use rather than (not rather then).

Wrong: Complete the report then submit it.
Right: Complete the report, then submit it.
Wrong: I would rather go then stay.
Right: I would rather go than stay.

Memory tricks and proofreading shortcuts

Mnemonic A: Than = comparison → both contain "an" (think "comparison"). Mnemonic B: Then = time → both start with "t" (then/time). Quick and not foolproof, but handy under time pressure.

Proofreading routine: highlight each then/than, run the two substitution tests (compared to / after that), and read the sentence aloud with the substitution.

Substitute "compared to" → fits? Use than.
Substitute "after that" → fits? Use then.
Read aloud; many misused words resolve when you hear the intent.

Try your own sentence

Test the whole sentence, not just the phrase-context usually makes the right choice obvious.

Rewrite help: copy-ready templates and fixes

Use these templates to fix most mistakes. Each gives a direct correction and an alternate, clearer phrasing.

Template A (simple comparison): "[X] than [Y]". Wrong: "X then Y" →
Correct: "X than Y".
Template B (preference/contrast): "rather than [verb/phrase]" or "other than [noun]".
Template C (contrast with clause): "Different from [noun]" (formal) or "Different than [clause]" (informal).

Rewrite:
Wrong: "I'd prefer coffee then tea." →
Correct: "I'd prefer coffee rather than tea." → Alt: "Compared to tea, I prefer coffee."
Rewrite:
Wrong: "I finished then I submitted the report." →
Correct: "I finished the report, then I submitted it." → Alt: "After finishing the report, I submitted it."
Rewrite:
Wrong: "Different then the study, our sample is smaller." →
Correct: "Different from the study, our sample is smaller." → Alt: "Unlike the study, our sample is smaller."
Rewrite:
Wrong: "I prefer to bike rather then to drive." →
Correct: "I prefer to bike rather than drive."

Examples you can copy: work, school, and casual

Common wrong sentences followed by natural corrections for emails, assignments, and chats.

Work_wrong: Our Q2 sales were higher then projections.
Work_right: Our Q2 sales were higher than projections.
Work_wrong: Please attach the new design rather then the old file.
Work_right: Please attach the new design rather than the old file.
Work_wrong: The product is more durable then competitors' models.
Work_right: The product is more durable than competitors' models.
School_wrong: This theory is easier then the previous one.
School_right: This theory is easier than the previous one.
School_wrong: Different then Smith's model, our data shows a clear trend.
School_right: Different from Smith's model, our data show a clear trend.
School_wrong: I would rather present then write the full paper.
School_right: I would rather present than write the full paper.
Casual_wrong: I'd take pizza then salad.
Casual_right: I'd take pizza rather than salad.
Casual_wrong: I would go other then him.
Casual_right: I'd go with someone other than him.
Casual_wrong: She looks happier then last year.
Casual_right: She looks happier than last year.

Real usage and register: formal vs informal

The basic than vs then distinction never changes. What shifts by register is whether to prefer different from or accept different than.

Formal: prefer "different from" and always use "than" for comparisons.
Informal: "different than" is common and acceptable in many contexts, but never use "then" in place of "than."

Usage (formal): The results differ from previous studies.
Usage (informal): The results were different than I expected.
Incorrect in any register: She is smarter then him. → use "than".

Similar mistakes, punctuation, hyphenation, and final checks

Other nearby errors include adding an unnecessary "to" after rather than ("rather than to"), missing commas when then joins independent clauses, or awkward compound hyphenation.

Hyphenation and compounds

Avoid writing other-than as a single word unless using it adjectivally in a deliberate compound (e.g., "other-than-expected" in creative uses). Most comparisons do not need hyphens.

Don't write "rather then to" - write "rather than [verb]".
Comma rule: use a comma before then when it joins two independent clauses (Finish X, then do Y). No comma is needed when then is an adverb inside a clause.
Final check: fix the than/then first, then tidy verb forms and punctuation.

Wrong: I prefer to bike rather then to drive.
Right: I prefer to bike rather than drive.
Wrong: Finish the draft then send it.
Right: Finish the draft, then send it.

FAQ

Is "different then" ever correct?

Only when then refers to time ("at that time"). For comparisons, use "different from" (formal) or "different than" (informal American usage).

Which is correct: rather then or rather than?

Rather than is correct; rather then is a common typo and should be corrected.

Can I use "than" with verbs (for example, rather than + verb)?

Yes. Use "rather than" before a verb or phrase: "I prefer to read rather than watch." Do not add an extra "to" after rather than.

What's a fast trick to spot the error?

Replace the word with "compared to." If that makes sense, use than. Replace it with "after that." If that makes sense, use then. Read aloud with the substitution.

Do style guides allow "different than"?

Some accept it in informal contexts or when a following clause reads more smoothly. For formal academic or legal prose, "different from" is usually preferred.

Quick practice to make it stick

Before sending important messages or submitting work, scan for then/than and run the substitution tests. Save a few corrected examples to a personal reminder list.

If you want automatic checks, paste sentences into a grammar tool to highlight then/than errors and suggest tone-appropriate rewrites.