Standard Lemma guide

no-op

adj · noun · 3 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

Each Play button uses your device's default local English voice, or a natural local fallback. The selected voice name appears after playback. This is synthesized speech, not a source recording.

  • US: Recorded audio is listed in the source snapshot.

1

adj

Meaning 1

Having chosen not to undergo sex reassignment surgery.

Definition source: English Wiktionary via Wiktextract

Usage: not-comparable

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: non-op

Antonyms: none provided

2

noun

Meaning 2

An instruction or operation that has no effect; a null operation.

Definition source: English Wiktionary via Wiktextract

Topics: computing, engineering, mathematics, natural-sciences, physical-sciences, sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: nop

Antonyms: none provided

3

noun

Meaning 3

A transgender or transsexual person who has chosen not to undergo sex reassignment surgery.

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: non-op

Antonyms: none provided

History

Etymology

Short for no operation.

Short for no operation (NOP), common assembly language instruction.

Across languages

Translations

1 source translations are retained for this English entry.

  • Vietnamese: lệnh vô tác — instruction or operation that has no significant effect