hotheaded vs irascible

hotheaded and irascible both are adjectives.

Word	Noun	Adjective	Verb	Adverb
hotheaded	No	Yes	No	No
irascible	No	Yes	No	No

As adjectives, hotheaded and irascible are synonyms defined as:

Other synonyms of hotheaded include choleric, hot-tempered, quick-tempered, short-tempered.

hotheaded (adjective)	irascible (adjective)
quickly aroused to anger	characterized by anger
characterized by undue haste and lack of thought or deliberation	quickly aroused to anger