- The definition of fatuous is foolish or silly.
An example of fatuous is the nature of a clown.
This man is fatuous.
- complacently stupid or inane; silly; foolish
- Archaic like an ignis fatuus; illusory; unreal
Origin of fatuousClassical Latin fatuus, foolish ; from Indo-European base an unverified form bhāt-, to strike from source batter
Origin of fatuousFrom Latin fatuus.
(comparative more fatuous, superlative most fatuous)
- Refers especially to foolishness and disregard of reality.
From Latin fatuus (“foolish, silly, simple”).