n.
Pronunciation: i- ' ra-sh( ə -)n ə - ˌ li-z ə m
Function: noun
Date: 1811
1 : a system emphasizing intuition, instinct, feeling, or faith rather than reason or holding that the universe is governed by irrational forces
2 : the quality or state of being irrational
– ir · ra · tio · nal · ist \ -list \ noun or adjective
– ir · ra · tio · nal · is · tic \ - ˌ ra-sh( ə -)n ə - ' lis-tik \ adjective