Nouns

(n)pique, temper, irritationa sudden outburst of anger“his temper sparked like damp firewood”
(n)temper, mood, humor, humoura characteristic (habitual or relatively temporary) state of feeling“whether he praised or cursed me depended on his temper at the time”, “he was in a bad humor”
(n)temper, biliousness, irritability, peevishness, pettishness, snappishness, surlinessa disposition to exhibit uncontrolled anger“his temper was well known to all his employees”
(n)temper, toughnessthe elasticity and hardness of a metal object; its ability to absorb considerable energy before cracking

Verbs

(v)anneal, temper, normalizebring to a desired consistency, texture, or hardness by a process of gradually heating and cooling“temper glass”
(v)temper, hardenharden by reheating and cooling in oil“temper steel”
(v)temperadjust the pitch (of pianos)
(v)temper, season, mollify, moderatemake more temperate, acceptable, or suitable by adding something else“she tempered her criticism”
(v)chasten, temperchange by restraining or moderating