irritated vs pissed off

irritated and pissed off both are adjectives.

Word	Noun	Adjective	Verb	Adverb
irritated	No	Yes	No	No
pissed off	No	Yes	No	No

As adjectives, irritated and pissed off are synonyms defined as:

Other synonyms of irritated include annoyed, miffed, nettled, peeved, pissed, riled, roiled, steamed, stung.

irritated (adjective)	pissed off (adjective)
aroused to impatience or anger	aroused to impatience or anger