Phrase guide

fever swamp

noun · 3 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

An area of stagnant water and hot temperatures that acts as a breeding ground for disease vectors such as mosquitos.

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

A group of political extremists or an area that is dominated by them.

Definition source: English Wiktionary via Wiktextract

Usage: derogatory

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

3

noun

Meaning 3

A set of extreme and crazy political positions.

Definition source: English Wiktionary via Wiktextract

Usage: derogatory

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

History

Etymology

The original term sprang from the belief that the swamp itself caused illnesses such as malaria and cholera, before the role of disease vectors was understood. The political use of the term is generally attributed to the neoconservative journalist Midge Decter, as a metaphor for right-wing political extremists as breeding ground for crazy ideas.