Definition of maniacal:
daft, nuts, crackers, cracked, non compos mentis, maniac, gaga, crazy as a loon, fruity, mad as a hatter, touched, nutty as a fruitcake, screwy, daffy, dotty, disordered, sick in the head, cuckoo, unsound, sane, not all there, wrong, buggy, brainsick, bonkers, of unsound mind, moonstruck, bananas, wacky, distraught, insane, off, loco, mentally ill, loony, stark raving mad, around the bend.
- "Ernest Maltravers, Complete", Edward Bulwer-Lytton.
- "The Napoleon of Notting Hill", Gilbert K. Chesterton.
- "The Log of a Privateersman", Harry Collingwood.