Standard Lemma guide

onslaught

noun · 5 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.

  • Received-Pronunciation: /ˈɒn.slɔːt/
  • Australian, British, Southern, Standard: /ˈɔnsloːt/
  • Northern-US: /ˈɑn.slɔt/ without the cot–caught merger
  • /ˈɔn.slɔt/ Midland US, Southern US, without the cot–caught merger
  • cot-caught-merger: /ˈɑn.slɑt/
  • US: cot-caught Recorded audio is listed in the source snapshot.
  • Scotland: /ˈɔnslɔt/
  • CMU ARPABET: AO1 N S L AO2 T Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.

1

noun

Meaning 1

A fierce attack.

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: onrush

Antonyms: none provided

2

noun

Meaning 2

A large number of people or things resembling an attack.

Definition source: English Wiktionary via Wiktextract

Usage: broadly

Examples

  • They opened the doors and prepared for the onslaught of holiday shoppers.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

3

noun

Meaning 3

(military) an offensive against an enemy (using weapons)

Definition source: Princeton WordNet 3.0

Examples

  • the attack began at dawn

Meaning relationships

Synonyms: attack, onset, onrush

Antonyms: none provided

Broader terms: operation, military operation

Narrower terms: ground attack, charge, banzai attack, banzai charge, diversion, diversionary attack, penetration, incursion, blitz, blitzkrieg, strike, counterattack, countermove, bombing, bombardment, fire, firing, strafe, surprise attack, coup de main

4

noun

Meaning 4

the rapid and continuous delivery of linguistic communication (spoken or written)

Definition source: Princeton WordNet 3.0

Examples

  • a barrage of questions
  • a bombardment of mail complaining about his mistake

Meaning relationships

Synonyms: barrage, bombardment, outpouring

Antonyms: none provided

Broader terms: language, linguistic communication

5

noun

Meaning 5

a sudden and severe onset of trouble

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

Broader terms: trouble

History

Etymology

From on- + slaught. Formed after Middle Dutch aenslag, aenslach, equivalent to aen + slag, although slaught corresponds to Middle Dutch slacht; slag is cognate with the English weaving term sley. Compare Dutch aanslag and German Anschlag.

Across languages

Translations

66 source translations are retained for this English entry.

  • Belarusian: на́ціск (nácisk) — fierce attack
  • Bulgarian: я́ростна ата́ка (járostna atáka) — fierce attack
  • Catalan: envestida — fierce attack
  • Catalan: atac — fierce attack
  • Chinese Cantonese: 猛攻 (maang6 gung1) — fierce attack
  • Chinese Mandarin: 猛攻 (měnggōng) — fierce attack
  • Czech: úder — fierce attack
  • Czech: útok — fierce attack
  • Finnish: hyökkäys — fierce attack
  • Finnish: päällekarkaus — fierce attack
  • Finnish: rynnäkkö — fierce attack
  • French: assaut — fierce attack
  • French: offensive — fierce attack
  • Galician: guinada — fierce attack
  • Galician: bimbión — fierce attack
  • Galician: asalto — fierce attack
  • German: Angriff — fierce attack
  • German: Ansturm — fierce attack
  • German: Strum — fierce attack
  • Greek: ορμή (ormí) — fierce attack
  • Ancient Greek: ὁρμή (hormḗ) — fierce attack
  • Hungarian: támadás — fierce attack
  • Italian: assalto — fierce attack
  • Latin: ēruptiō — fierce attack
  • Māori: tukituki — fierce attack
  • Māori: ngaunga — fierce attack
  • Polish: atak — fierce attack
  • Portuguese: assalto — fierce attack
  • Portuguese: investida — fierce attack
  • Romanian: asalt — fierce attack
  • Romanian: ofensivă — fierce attack
  • Romanian: atac — fierce attack
  • Russian: на́тиск (nátisk) — fierce attack
  • Slovak: útok — fierce attack
  • Spanish: embestida — fierce attack
  • Spanish: ataque — fierce attack
  • Spanish: arremetida — fierce attack
  • Spanish: acometida — fierce attack
  • Swedish: angrepp — fierce attack
  • Swedish: våldsamt anfall — fierce attack
  • Turkish: taarruz — fierce attack
  • Turkish: saldırı — fierce attack
  • Ukrainian: на́тиск (nátysk) — fierce attack
  • Czech: nájezd — large quantity of people or things resembling an attack
  • Czech: invaze — large quantity of people or things resembling an attack
  • Czech: nápor — large quantity of people or things resembling an attack
  • Czech: příval — large quantity of people or things resembling an attack
  • Finnish: ryntäys — large quantity of people or things resembling an attack
  • French: assaut — large quantity of people or things resembling an attack
  • French: invasion — large quantity of people or things resembling an attack
  • Galician: riola — large quantity of people or things resembling an attack
  • Galician: presa — large quantity of people or things resembling an attack
  • Galician: aluvión — large quantity of people or things resembling an attack
  • Hungarian: roham — large quantity of people or things resembling an attack
  • Hungarian: ostrom — large quantity of people or things resembling an attack
  • Italian: invasione — large quantity of people or things resembling an attack
  • Kazakh: қаптау (qaptau) — large quantity of people or things resembling an attack
  • Kazakh: қаптап кету (qaptap ketu) — large quantity of people or things resembling an attack
  • Kazakh: торлау (torlau) — large quantity of people or things resembling an attack
  • Kazakh: басу (basu) — large quantity of people or things resembling an attack
  • Portuguese: invasão — large quantity of people or things resembling an attack
  • Romanian: asalt — large quantity of people or things resembling an attack
  • Russian: наплы́в (naplýv) — large quantity of people or things resembling an attack
  • Russian: на́тиск (nátisk) — large quantity of people or things resembling an attack
  • Spanish: avalancha — large quantity of people or things resembling an attack
  • Swedish: anstormning — large quantity of people or things resembling an attack