Roget's Thesaurus of English Words and Phrases by Peter Mark Roget

whimwham†; crotchet, capriccio, quirk, freak, maggot, fad, vagary, prank, fit, flimflam, escapade, boutade [Fr.], wild-goose chase; capriciousness &c adj.; kink. V. be capricious &c adj.; have a maggot in the brain; take it into one's head, strain at a gnat and swallow a camel; blow hot and cold; play fast and loose, play fantastic tricks; tourner casaque [Fr.]. Adj. capricious; erratic, eccentric, fitful, hysterical; full of whims &c n.; maggoty; inconsistent, fanciful, fantastic, whimsical, crotchety, kinky [U.S.], particular, humorsome†, freakish, skittish, wanton, wayward; contrary; captious; arbitrary; unconformable &c 83; penny wise and pound foolish; fickle &c (irresolute) 605; frivolous, sleeveless, giddy, volatile. Adv. by fits and starts, without rhyme or reason. Phr. nil fuit unquain sic inipar sibi [Lat.]; the deuce is in him.