miffed vs pissed off

miffed and pissed off both are adjectives.

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

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

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

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