folie

/fɔ.li/
1.
nounfeminine

madness

insanity

Son comportement relève de la folie.

His behaviour amounts to madness.

Synonyms:démence, aliénation
2.
nounfeminine

foolishness

a stupid or reckless act

C'est de la pure folie de sortir par ce temps.

It's pure madness to go out in this weather.

Synonyms:bêtise, absurdité
3.
nounfeminine

something amazing or wild (colloquial)

an extravagance or splurge

a craze, widespread mania

Leur soirée hier, c'était une folie !

Their party yesterday was wild!

Synonyms:délire, dinguerie
folie - French Definition & Examples