Synonyms of psychopathic in English:

psychopathic


See US English definition of psychopathic

See UK English definition of psychopathic

adjective

1‘a horror movie about a group of young people being picked off in the woods by a psychopathic killer’

SYNONYMS
severely mentally ill, mentally ill, insane, mad, certifiable, deranged, demented, of unsound mind, out of one's mind, not in one's right mind, not together, crazed, maniac, maniacal, lunatic, unbalanced, unhinged, unstable, disturbed, distracted, stark mad, manic, frenzied, raving, distraught, frantic, hysterical, delirious, mad as a hatter, mad as a March hare
non compos mentis
British sectionable
informal crazy, mental, off one's head, out of one's head, off one's nut, nuts, nutty, nutty as a fruitcake, off one's rocker, not right in the head, not quite right in the head, round the bend, stark raving mad, raving mad, bats, bonkers, cuckoo, loopy, loony, bananas, loco, dippy, screwy, with a screw loose, schizoid, touched, gaga, not all there, not right upstairs, foaming at the mouth
British informal barmy, batty, crackers, barking, barking mad, stark staring mad, round the twist, off one's trolley, daft, as daft as a brush, not the full shilling, up the pole, away with the fairies
North American informal buggy, off the wall, nutsy, nutso, out of one's tree, meshuga, squirrelly, wacko
Canadian, Australian, New Zealand informal bushed
New Zealand informal porangi
technical psychotic, sociopathic, psychopathological