1) Choleric 2) Easily angered 3) Easy to anger 4) Excitab1e 5) Having a short fuse 6) Hot-tempered 7) Ill-natured 8) Impetuous 9) Irascible 10) Quick to take offense 11) Quick-tempered 12) Quickly aroused to anger 13) Rash 14) Short 15) Short-tempered Found on https://www.crosswordclues.com/clue/hotheaded
impulsiveadjective characterized by undue haste and lack of thought or deliberation; `a hotheaded decision`; `liable to such impulsive acts as hugging strangers`; `an impetuous display of spending and gambling`; `madcap escapades`; (`brainish` is arch... Found on https://www.encyclo.co.uk/local/20974