What is another word for "captious"?

Roget's Thesaurus (1911) lists these synonyms for "captious": and, arbitrary, blow, boutade, brain, camel, capriccio, caprice, capricious, chase, cold, contrary, crotchet, crotchety, deuce, eccentric, erratic, escapade, fad, fanciful, fancy, fantastic, fast, fickle, fit, fitful, flimflam, foolish, freak, freakish, frivolous, full, giddy, gnat, have, head, him, hot, humor, humorsome.