Mythomania

//ˌmɪ.θəʊˈmeɪ.ni.ə// noun

noun ·Rare ·Advanced level

Definitions

Noun

1
A compulsion to tell lies and exaggerate the truth. countable, uncountable

Synonyms

credibility gap dishonesty falsehood lying mendacity mythomane

Etymology

From mytho- + -mania. Compare French mythomanie f.

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