tempersome UK /ˈtɛmpəsəm/US /ˈtɛmpɚsəm/ adjective1 •Characterised or marked by a temper; bad-tempered; temperamental; hotheaded; moody.And now that it is so tempersome and cold you are always going out into the nastiness and getting wet or frozen every day. — 1946 formsmore tempersome · most tempersome