Standard Lemma guide

knockout

adj · noun · 19 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.

  • UK: /ˈnɒk.aʊt/
  • Southern-England: Recorded audio is listed in the source snapshot.
  • General-American: /ˈnɑk.oʊt/
  • CMU ARPABET: N AA1 K AW2 T Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.

1

adj

Meaning 1

Rendering someone unconscious.

Definition source: English Wiktionary via Wiktextract

Usage: not-comparable

Examples

  • He delivered a knockout blow.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

adj

Meaning 2

Amazing; gorgeous; beautiful.

Definition source: English Wiktionary via Wiktextract

Usage: not-comparable

Examples

  • You should have seen her knockout eyes.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

3

adj

Meaning 3

Designating an organism in which a particular gene has been removed or deactivated.

Definition source: English Wiktionary via Wiktextract

Usage: not-comparable

Topics: biology, genetics, medicine, natural-sciences, sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

4

adj

Meaning 4

Causing elimination from a competition.

Definition source: English Wiktionary via Wiktextract

Usage: not-comparable

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

5

noun

Meaning 5

The act of making one unconscious, or at least unable to come back on one's feet within a certain period of time; a TKO.

Definition source: English Wiktionary via Wiktextract

Examples

  • The boxer scored a knockout on his opponent.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

6

noun

Meaning 6

The deactivation of anything.

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

7

noun

Meaning 7

Something wildly popular, entertaining, or funny.

Definition source: English Wiktionary via Wiktextract

Usage: informal

Examples

  • If you've ever had a sack race, you know it's a real knockout for kids and adults alike.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

8

noun

Meaning 8

A very attractive person, especially a beautiful woman.

Definition source: English Wiktionary via Wiktextract

Usage: informal

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: stunner

Antonyms: none provided

9

noun

Meaning 9

A partially punched opening meant for optional later removal.

Definition source: English Wiktionary via Wiktextract

Examples

  • They left a knockout in the panel for running extra wires someday.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

10

noun

Meaning 10

The deactivation of a particular gene.

Definition source: English Wiktionary via Wiktextract

Topics: biology, genetics, medicine, natural-sciences, sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

11

noun

Meaning 11

A creature engineered with a particular gene deactivated.

Definition source: English Wiktionary via Wiktextract

Topics: biology, genetics, medicine, natural-sciences, sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

12

noun

Meaning 12

An event where a foreground color causes a background color not to print.

Definition source: English Wiktionary via Wiktextract

Topics: media, printing, publishing

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

13

noun

Meaning 13

A tournament in which a team or player must beat the opponent in order to progress to the next round.

Definition source: English Wiktionary via Wiktextract

Topics: hobbies, lifestyle, sports

Examples

  • the knockout stages of the competition

Meaning relationships

Synonyms: none provided

Antonyms: none provided

14

noun

Meaning 14

A simple game for two or more players, derived from basketball.

Definition source: English Wiktionary via Wiktextract

Usage: uncountable

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

15

noun

Meaning 15

A woman in Total Nonstop Action Wrestling.

Definition source: English Wiktionary via Wiktextract

Usage: US, capitalized

Topics: government, hobbies, lifestyle, martial-arts, military, politics, professional-wrestling, sports, war, wrestling

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

16

noun

Meaning 16

Ellipsis of knockout auction.

Definition source: English Wiktionary via Wiktextract

Usage: abbreviation, alt-of, ellipsis

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

17

adjective satellite

Meaning 17

very strong or vigorous

Definition source: Princeton WordNet 3.0

Examples

  • strong winds
  • a hard left to the chin
  • a knockout punch
  • a severe blow

Meaning relationships

Synonyms: hard, severe

Antonyms: none provided

18

noun

Meaning 18

a blow that renders the opponent unconscious

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: KO, kayo

Antonyms: none provided

Broader terms: blow

Narrower terms: technical knockout, TKO

19

noun

Meaning 19

a very attractive or seductive looking woman

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: smasher, stunner, beauty, ravisher, sweetheart, peach, lulu, looker, mantrap, dish

Antonyms: none provided

Broader terms: woman, adult female

History

Etymology

Deverbal from knock out.

Across languages

Translations

38 source translations are retained for this English entry.

  • Bulgarian: зашеметен (zašemeten) — Rendering someone unconscious
  • Finnish: tyrmäävä — Rendering someone unconscious
  • French: incapacitant — Rendering someone unconscious
  • French: assommant — Rendering someone unconscious
  • Italian: incosciente — Rendering someone unconscious
  • Polish: nokautujący — Rendering someone unconscious
  • Thai: ยกเดียวจอด (yohk diaao jaawt) — Rendering someone unconscious
  • Finnish: tyrmäävä — Stunning; amazing; gorgeous
  • Galician: abraiante — Stunning; amazing; gorgeous
  • Galician: impresionante — Stunning; amazing; gorgeous
  • Georgian: საოცარი (saocari) — Stunning; amazing; gorgeous
  • Georgian: გადასარევი (gadasarevi) — Stunning; amazing; gorgeous
  • Polish: powalający — Stunning; amazing; gorgeous
  • Portuguese: lindo — Stunning; amazing; gorgeous
  • Portuguese: deslumbrante — Stunning; amazing; gorgeous
  • Russian: сногсшиба́тельный (snogsšibátelʹnyj) — Stunning; amazing; gorgeous
  • Spanish: despampanante — Stunning; amazing; gorgeous
  • Thai: ยกเดียวจอด (yohk diaao jaawt) — Stunning; amazing; gorgeous
  • Belarusian: нака́ўт (nakáwt) — act of making someone unconscious
  • Bulgarian: но́каут (nókaut) — act of making someone unconscious
  • Dutch: knock-out — act of making someone unconscious
  • Finnish: tyrmäys — act of making someone unconscious
  • French: KO — act of making someone unconscious
  • French: knock-out — act of making someone unconscious
  • Georgian: ნოკაუტი (noḳauṭi) — act of making someone unconscious
  • Indonesian: knockout — act of making someone unconscious
  • Japanese: ノックアウト (nokkuauto) — act of making someone unconscious
  • Korean: 녹아웃 (nogaut) — act of making someone unconscious
  • Macedonian: нокаут (nokaut) — act of making someone unconscious
  • Polish: nokaut — act of making someone unconscious
  • Portuguese: nocaute — act of making someone unconscious
  • Russian: нока́ут (nokáut) — act of making someone unconscious
  • Serbo-Croatian: nokaut — act of making someone unconscious
  • Spanish: nocaut — act of making someone unconscious
  • Turkish: nakavt — act of making someone unconscious
  • Ukrainian: нока́ут (nokáut) — act of making someone unconscious
  • Vietnamese: nốc ao — act of making someone unconscious
  • Vietnamese: đo ván — act of making someone unconscious
Real reading context

knockout in complete knowledge articles