insane
2 antonyms for insane — opposites grouped by meaning.
Adj — Suffering from serious mental illness; not of sound mind.
Antonyms
How to use insane
The word patterns that sound natural to a native speaker.
The mental-illness sense is now considered outdated and stigmatizing in clinical contexts; the casual senses (reckless, amazing) are common in everyday speech.
Etymology
From Latin insanus, "unsound in mind" — in- ("not") plus sanus ("sound, healthy").
Full origin of insane →