I. adjective
1.
Synonyms: insane 1, ||batty, cracked, crazed, crazy, demented, deranged, mad, maniac, unsound
2.
Synonyms: foolish 2, absurd, ||balmy, crazy, fantastic, insane, loony, ||potty, preposterous, wacky
II. noun
1.
a person who is insane or of unsound mind
Bedlam was a famous old English asylum for lunatics
Synonyms: bedlamite, dement, loon, loony, madling, madman, maniac, non compos, nut, Tom o' Bedlam
Related Word: demoniac, energumen; raver; neuropath, neurotic, paranoid, psycho, psychoneurotic
2.
Synonyms: crackpot , crackbrain, crank, cuckoo, ding-a-ling, harebrain, kook, nut, screwball