Phrase guide

nuclear option

noun · 2 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

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1

noun

Meaning 1

In resolving a problem, the possible course of action that is considered the most extreme because of its collateral consequences.

Definition source: English Wiktionary via Wiktextract

Usage: idiomatic

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

A procedure by which the United States Senate can decide any issue with a simple majority, rather than the usual supermajority.

Definition source: English Wiktionary via Wiktextract

Usage: US

Topics: government, politics

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

History

Etymology

From analogy with the political decision to be the first to use nuclear weapons in a war.