relating to or caused by temperament; temperamental indifference to neatness; temperamental peculiarities'

subject to sharply varying moods; a temperamental opera singer

[ Syn: moody ]

likely to perform unpredictably; erratic winds are the bane of a sailor; a temperamental motor; sometimes it would start and sometimes it wouldnt; that beautiful but temperamental instrument the flute- Osbert Lancaster

[ Syn: erratic ]