Standard Lemma guide

swiftboat

noun · verb · 4 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

A type of gunboat used by the United States military on inland waterways.

Definition source: English Wiktionary via Wiktextract

Usage: US

Topics: government, military, politics, war

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

A smear campaign based on specious claims.

Definition source: English Wiktionary via Wiktextract

Usage: attributive, figuratively, usually

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

3

verb

Meaning 3

To attack a politician with specious claims.

Definition source: English Wiktionary via Wiktextract

Usage: US, derogatory, transitive

Topics: government, politics

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

4

verb

Meaning 4

To smear; to attack someone or something's reputation using slander, misrepresentation, or false accusations.

Definition source: English Wiktionary via Wiktextract

Usage: broadly

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

History

Etymology

Uncertain: Possibly, swift + boat, or possibly based on an acronym for Shallow Water Inshore Fast Tactical Craft. The use as a political term derives from a smear campaign against John Kerry when Texas tycoon Robert J. Perry hired several Navy swiftboat veterans to form the group Swift Boat Veterans for Truth, which questioned the legitimacy of Kerry's status as a war hero.