Flerf

noun, slang

noun, slang ·Uncommon ·College level

Definitions

Noun

1
A flat-earther. derogatory, slang
"Flerfs often employ logical fallacies to justify their belief."

Synonyms

flat-earther flattard

Antonyms

globe-earther globehead glober globetard

Example

"Flerfs often employ logical fallacies to justify their belief."

Etymology

Humorous modification of flat-earther, with th-fronting.

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