general Definitions of delusionist - OneLook Isabella Bartlett Apr 07, 2026 Definitions from Wiktionary (delusionist)▸ noun: A delusional person; one who believes something that is false.errorist, distortionist, wishful thinker, obsessionist, schizophrenic, hallucinaut, illusionist, superstitionist, pseudologist, dreamer, more...▸ Words similar to delusionist▸ Usage examples for delusionist▸ Idioms related to delusionist▸ Civic discussion about delusionist (New!)▸ Popular adjectives describing delusionist▸ Words that often appear near delusionist▸ Rhymes of delusionist▸ Invented words related to delusionist