don't aren't

Native speakers and learners mix up don't and aren't because both are short negatives. The simplest test: identify the verb you're negating. If the verb is a form of be (am/is/are) or part of a passive or progressive, use aren't/isn't/am not; for other present-simple verbs use don't/doesn't. That one choice fixes most errors.

Quick rule

If the main verb is be (am/is/are) or a passive/progressive, use aren't/isn't/am not. If the main verb is any other present-simple action, use don't/doesn't. For present continuous, use aren't/isn't/am not + verb-ing.

Aren't = are not; use with are (they aren't, we aren't) or with passive/state adjectives (aren't ready).
Don't = do not; use with main verbs in the simple present (I don't know, they don't work) or in imperatives (don't go).
If unsure, ask: "Is the verb be here?" Yes → aren't/isn't/am not. No → don't/doesn't.

Core explanation: what's different

Don't is the negative auxiliary for do: it negates actions in the present simple (I don't eat), commands (don't go), and emphatic constructions using do. Aren't is the negative form of are and appears with plural subjects or you (they aren't, you aren't), and with progressive or passive constructions (they aren't coming; doors aren't locked).

Common errors:

Using don't before an -ing form or adjective when a form of be is required: wrong: "they don't coming" →
right: "they aren't coming."
Replacing don't with aren't when the sentence needs do/does: wrong: "I aren't know" →
right: "I don't know."

Step-by-step diagnostic checklist

Run this mini checklist: 1) Is the main verb a form of be or a past participle in a passive? 2) Is the verb an -ing present continuous? 3) Otherwise is it a simple present action? Answering these gives you aren't/isn't/am not for Q1-Q2, and don't/doesn't for Q3.

If main verb = be or passive → aren't/isn't/am not (They aren't ready; The tests aren't graded).
If main verb = simple present action → don't/doesn't (She doesn't agree; We don't meet on Fridays).
If present continuous (-ing) → aren't/isn't/am not + -ing (We aren't meeting tomorrow).
Special: for statements with I, use "I'm not." For tags and some questions use "Aren't I?" (see tone notes).

Real usage and tone: formal vs casual

Spoken English accepts more contractions and regional variants; written English is stricter. Avoid nonstandard forms like "I aren't" in formal writing. Contractions are fine in emails and casual messages but consider "are not" or "do not" for reports.

Note the question tag: speakers commonly say "Aren't I?" instead of "Amn't I?" For statements, use "I'm not."

Statement: "I'm not ready." Question tag: "Aren't I?"
Avoid dialectal nonstandard forms in formal contexts.

Examples you can copy: work, school, casual

Below are wrong/right pairs that you can paste or adapt. They focus on don't used where aren't is needed (especially before -ing and adjectives) and on correct alternatives when the subject requires a different negation.

Work - Wrong: The clients don't available until Monday.Work -
Right: The clients aren't available until Monday.
Work - Wrong: We don't having a meeting this afternoon.Work -
Right: We aren't having a meeting this afternoon.
Work - Wrong: If you don't comfortable with the plan, say so.Work -
Right: If you aren't comfortable with the plan, say so.
School - Wrong: The students don't attending the lecture today.School -
Right: The students aren't attending the lecture today.
School - Wrong: Group projects don't allowed after week two.School -
Right: Group projects aren't allowed after week two.
School - Wrong: I don't going to the seminar.School -
Right: I'm not going to the seminar.
Casual - Wrong: They don't coming to the party.Casual -
Right: They aren't coming to the party.
Casual - Wrong: I don't feeling great this morning.Casual -
Right: I'm not feeling great this morning.
Casual - Wrong: She don't ready to leave yet.Casual -
Right: She isn't ready to leave yet.

Try your own sentence

Test the whole sentence, not just the phrase. Context usually makes the right auxiliary clear.

How to fix your sentence fast (rewrite templates)

Quick edit routine: 1) Underline the verb or adjective after the contraction. 2) Decide whether that word needs be (are/is/am) or do (do/does). 3) Replace the contraction and adjust the verb form (base vs -ing vs past participle).

Copy these short templates and swap in your words.

Progressive: Wrong → "They don't [verb]-ing" → Fix: "They aren't [verb]-ing."
State/adjective: Wrong → "He don't [adjective]" → Fix: "He isn't [adjective]." (Or "He doesn't seem [adjective]" if that fits.)
Simple present action: Wrong → "She aren't [base verb]" → Fix: "She doesn't [base verb]."

Rewrite:
Wrong: They don't coming tomorrow. →
Rewrite: They aren't coming tomorrow.
Rewrite:
Wrong: If you don't happy with it, tell me. →
Rewrite: If you aren't happy with it, tell me.
Rewrite:
Wrong: We aren't understand the policy. →
Rewrite: We don't understand the policy.

Memory trick: a two-question filter

Ask two questions: 1) Is the word after the contraction an adjective or an -ing form that depends on be? 2) Is the verb an action in the simple present that needs do/does? If Q1 yes → use aren't/isn't. If Q2 yes → use don't/doesn't.

Mnemonic: "Be? → Are. Action? → Do." It speeds up the choice in speech and drafting.

Example: "They _____ late." Late = adjective → "They aren't late."
Example: "They _____ the report." Report follows an action verb → "They don't have the report."

Hyphenation, apostrophe, and spacing notes

Contractions use an apostrophe to mark omitted letters: don't = do not, aren't = are not. Never add spaces inside the contraction (don 't) and avoid dropping the apostrophe (dont, arent) in standard writing.

Proofread for the correct apostrophe character and no extra spaces. For formal documents, prefer "do not" or "are not" over contractions.

Correct: don't, aren't.
Incorrect: dont, arent, don 't, aren 't.
Pronoun contractions: I'm (I am), you're (you are), we're (we are). Put the apostrophe exactly where letters are missing.

Similar mistakes to watch for

Also check subject-verb agreement and auxiliary choice: don't vs doesn't, isn't vs aren't, and nonstandard forms like amn't. Watch for missing auxiliaries in question tags and for double negatives that change meaning.

Wrong: He don't like pizza. →
Right: He doesn't like pizza.
Wrong: Aren't she coming? →
Right: Isn't she coming?
Avoid double negatives: "I don't need no help" → "I don't need any help."

FAQ

Should I use don't or aren't with plural subjects?

Use aren't with plural subjects when the verb is be or part of a progressive/passive (They aren't ready; They aren't being paid). Use don't when you negate a simple present action with plural subjects (They don't work on Sundays).

Why do people say "Aren't I?" instead of "Amn't I?"

"Amn't" is nonstandard in modern English. Speakers use "Aren't I?" in questions and tags. In formal writing, use "Am I not...?" if you want to avoid contractions.

Can I say "I don't feeling well"?

No. Use "I'm not feeling well" (present continuous) or "I don't feel well" (simple present). "I don't feeling" mixes do + -ing incorrectly.

Is "they don't coming" ever acceptable?

Not in standard English. Use "they aren't coming" for progressive actions. Regional spoken variants exist but avoid them in writing.

Which is correct: "She don't" or "She doesn't"?

"She doesn't" is correct in standard English. "She don't" appears in some dialects but is nonstandard in formal writing.

Want a quick check for your sentence?

If you're unsure, paste the sentence into a grammar checker to see flagged errors and suggested rewrites. A good checker highlights whether the verb needs be (aren't/isn't) or do (don't/doesn't) and offers corrected alternatives.

Use the widget above or any trusted checker to get instant rewrite suggestions and brief explanations you can learn from.