I. adjective
Synonyms: insane 1, ||batty, cracked, crazed, crazy, demented, deranged, lunatic, mad, unsound
Related Word: berserk, delirious, frantic, frenetic, frenzied, furious, rabid, raging, ranting, violent, wild
II. noun
1.
Synonyms: lunatic 1, bedlamite, dement, loon, loony, madling, madman, non compos, nut, Tom o' Bedlam
2.
Synonyms: enthusiast , bigot, bug, fanatic, fiend, freak, nut, zealot