flatline

to stop living the patient was fading fast, and doctors expected him to flatline before the night was over Synonyms check out, conk (out), croak [slang], decease, demise, depart, drop, end, exit, expire, fall, die, go, kick in [slang], kick off [slang], pass (on), pass away, part, peg out [chiefly British], perish, pop off, step out, succumbRelated Words predecease; consume, disappear, dry up, fade, failNear Antonyms come to, revive; linger; be, exist, subsist; flourish, prosper, thriveAntonyms breathe, live