Synonyms of demented in English:

demented


See definition of demented

adjective

1‘the ravings of a demented old man’

SYNONYMS
mad, insane, deranged, out of one's mind, not in one's right mind, crazed, lunatic, unbalanced, unhinged, unstable, disturbed, distracted, as mad as a hatter, as mad as a March hare, stark mad
non compos mentis
British sectionable
informal crazy, mental, off one's head, out of one's head, off one's nut, nutty, nutty as a fruitcake, off one's rocker, not right in the head, not quite right in the head, round the bend, raving mad, stark raving mad, stark staring mad, bats, batty, bonkers, cuckoo, loopy, loony, bananas, loco, dippy, screwy, with a screw loose, touched, gaga, doolally, up the pole, not all there, out to lunch, off the wall, not right upstairs, away with the fairies
British informal barmy, crackers, barking, barking mad, round the twist, off one's trolley, as daft as a brush, not the full shilling, one sandwich short of a picnic
North American informal buggy, nutsy, nutso, out of one's tree, meshuga, squirrelly, wacko, gonzo
Canadian, Australian, New Zealand informal bushed
New Zealand informal porangi
ANTONYMS

sane