insane
adjective
afflicted with or characteristic of mental derangement
“was declared insane”
“insane laughter”
Oppositessanevery foolish
“harebrained ideas”
“took insane risks behind the wheel”
Source: WordNet 3.1, Princeton University
Insane meaning
What does “insane” mean? Definitions, examples, synonyms and opposites.
“insane” is an adjective with 2 meanings. Its most common meaning is: afflicted with or characteristic of mental derangement.