folle

/fɔl/fou
1.
adjectivefeminine

crazy, insane (mentally unstable) — pejorative

Elle est complètement folle d'avoir démissionné sans rien de prévu.

She is completely crazy to have quit without anything else planned.

2.
adjectivefeminine

extremely intense or remarkable (e.g., an amazing party, tremendous speed); also used in constructions like 'folle de' meaning 'crazy about (someone/something)'.

Il y avait une ambiance folle à la soirée hier soir.

There was an amazing (insane) atmosphere at the party last night.