All-out

adj, adv

adj, adv ·2 syllables ·Moderate ·College level

Definitions

Adjective
  1. 1
    Using every available means. not-comparable

    "They were planning to launch an all-out attack against the enemy."

  2. 2
    Covering all aspects without exception. not-comparable

    "This book is an all-out examination of a very important issue in our community."

Adjective
  1. 1
    using all available resources wordnet
Adverb
  1. 1
    Alternative form of all out. alt-of, alternative, not-comparable

    "The tanks attacked all-out with the infantry."

Synonyms

All synonyms
absoluteabsolutelyall embracingall ends upall pervadingaltogether

Antonyms

All antonyms
partly

Example

More examples

"If there's a world-wide all-out nuclear war it's said that there will be a "nuclear winter" all over the planet for several months."

Etymology

From all + out.

Related phrases

all-outer

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.