hotheaded
hot-head-ed
adjective
Prone to acting impulsively and rashly, often easily angered or excitable.
"His hotheaded nature often got him into scrapes."
Thesaurus
Synonyms: choleric, hot-tempered, irascible, short-tempered, quick-tempered, ill-natured, tearaway, incautious, impetuous, impulsive, brainish, madcap