not longer -> no longer

Use "no longer" (or "any longer"/"anymore" after a verb) to show that something that used to be true has stopped. Never place "not" directly before "longer" with a main verb (for example, "She does not longer").

Below: a short rule, clear wrong/right pairs you can copy, frequent placement patterns, fixes for work/school/casual writing, a quick memory trick, and a short FAQ.

Quick answer

Put "no longer" before the main verb (or immediately after an auxiliary). As an alternative in informal contexts, use "not ... any longer" or "not ... anymore" after the verb.

Correct: She no longer works here.
Incorrect: She does not longer work here. - Fix: She no longer works here or She does not work here any longer.
With auxiliaries: They will no longer accept late submissions. With do/does/did you can say: We do not accept submissions any longer.

Core explanation

"No longer" is an adverbial phrase that marks the end of a previous state or action. It functions like a single unit in the sentence and usually appears just before the main verb or right after an auxiliary verb.

Because "no" negates the adjective/adverb "longer," combining "not" with "longer" directly before a main verb produces an ungrammatical sequence (not longer + verb). Instead, either use "no longer" before the verb or put "not" and "any longer/anymore" after the verb.

Spacing and hyphenation

"No longer" and "any longer" are two separate words. Do not hyphenate them or close them up into a single word. The correct written forms are two-word phrases.

Correct spacing: no longer, any longer, any more (informal: anymore).
Incorrect forms to avoid: not longer (before a main verb), nolonger, not-longer.

Placement with auxiliaries and negatives

Where "no longer" goes depends on the verb structure:

If there's an auxiliary (will, have, can, is, are, etc.), place "no longer" after the auxiliary: They will no longer accept late work.
If the sentence uses do/does/did as an auxiliary, prefer "do/does/did not + verb + any longer" or use "no longer" before the main verb in non-auxiliary forms: He did not live there any longer. He no longer lived there.
Contractions are fine with auxiliaries: She's no longer available. Avoid forms that would produce "not longer" (e.g., doesn't longer).

Real usage: work, school, and casual examples

Work

Wrong: The vendor does not longer provide those parts.
Right: The vendor no longer provides those parts.
Wrong: Management will not longer accept late invoices.
Right: Management will no longer accept late invoices.
Wrong: We cannot longer justify the extra cost.
Right: We can no longer justify the extra cost.

School

Wrong: The course does not longer include lab sessions.
Right: The course no longer includes lab sessions.
Wrong: She did not longer submit assignments on time.
Right: She no longer submitted assignments on time.
Wrong: I can not longer attend the study group.
Right: I can no longer attend the study group.

Casual

Wrong: I don't longer live in that neighborhood.
Right: I no longer live in that neighborhood. / I don't live in that neighborhood any longer.
Wrong: He can't longer come over tonight.
Right: He can no longer come over tonight. / He can't come over anymore.
Wrong: We're not longer together.
Right: We're no longer together. / We're not together anymore.

Wrong vs right examples you can copy

Six quick pairs showing typical errors and clean fixes.

Wrong: She does not longer work here. -
Right: She no longer works here.
Wrong: I can not longer tolerate this noise. -
Right: I can no longer tolerate this noise.
Wrong: They will not longer accept refunds. -
Right: They will no longer accept refunds.
Wrong: He didn't longer answer emails. -
Right: He no longer answered emails.
Wrong: We do not longer support that feature. -
Right: We no longer support that feature.
Wrong: She doesn't longer play the piano. -
Right: She no longer plays the piano. / She doesn't play the piano anymore.

How to fix your sentence: quick steps and rewrites

Three simple steps:

Identify whether the sentence has an auxiliary verb.
If yes, place "no longer" after the auxiliary. If not, place "no longer" before the main verb or use "not ... any longer" after the verb.
Reread for tone and natural flow; rewrite if the direct swap sounds awkward.

Three practical rewrites:

Original: This plan is She does not if everyone stays late.
Rewrite: This plan is no longer workable if everyone stays late.
Original: The assignment feels She does not now.
Rewrite: The assignment no longer feels manageable now.
Original: Is that She does not this afternoon?
Rewrite: Is that no longer happening this afternoon?

A simple memory trick

Think of "no longer" as a single meaning unit: "no" + "longer" = "not anymore." Picture them together every time you mean "not anymore." If you find "not" tempting in front of "longer," pause and substitute "no" before the verb instead.

Picture the phrase as one unit: "no longer" = "not anymore."
Search your draft for "not longer" and replace with the standard patterns in bulk.

Similar mistakes to watch for

Fixing one spacing/form error often reveals others nearby. Do a quick scan for these patterns:

Split words written together (e.g., "alot" vs "a lot").
Hyphen confusion (e.g., "re-sign" vs "resign").
Incorrect verb forms after auxiliaries.
Mixing "any longer" and "anymore" in awkward places.

FAQ

Is "not longer" ever correct?

No-when used directly before a main verb it is incorrect. Use "no longer" before the verb or "not ... any longer" after the verb (She does not work here any longer).

Should I use "no longer" or "any longer"?

"No longer" is more formal and fits most written contexts. "Any longer" or "anymore" is common in speech and informal writing and typically follows the verb.

Where does "no longer" go with auxiliaries?

Place it immediately after the auxiliary: They will no longer accept late submissions. With do/does/did you can also use "do/does/did not + verb + any longer."

Can I contract with "no longer"?

Yes. Contractions with auxiliaries are fine: "She's no longer available." Avoid constructions that would produce "not longer" (e.g., "doesn't longer").

How do I fix "cannot longer" or "can't longer"?

Use "can no longer" for a concise formal form: He can no longer attend. Informally use "can't ... anymore/any longer": He can't attend anymore.

Want a quick check?

Search your sentence for "not longer," "cannot longer," or "does not longer." Replace with the patterns above: "no longer" before the verb or "not ... any longer" after it. Reread the sentence to ensure smooth tone.