Hot temper is a term used to describe a person who has a tendency to become easily angered or frustrated. The crossword solutions for this term are IRE (3 letters), IRASCIBILITY (12 letters), and ANGER (5 letters). IRE is an Old English word meaning 'WRATH' or 'ANGER'. IRASCIBILITY is a noun meaning 'the quality of being easily angered or provoked'. ANGER is a strong emotion characterized by feelings of hostility, indignation, and resentment.