Green’s Dictionary of Slang

(US) angry, irritated.

1948		AS XXIII 31: [note] The development seems to have been as follows: Prewar civilian peeved off (angry) > peed off > G.I. pissed off.
1953		Berrey & Van Den Bark Amer. Thes. Sl. (1954) §288.8: Peed off, pissed off, pistoph, [etc.].
1967		(con. 1940s) M. Dibner Admiral (1968) 167: It’s my private opinion you’re peed off because the Army’s involved in it.
1977		J. Hersey Walnut Door 30: ‘Look,’ he says, sounding peed off, and holding the chopsticks under her nose.
1984		I. Doig Eng. Creek 93: They’re plenty piss—uh, peed off over it.
1997		C. Newland Scholar 45: I jus’ got a little pee’d off earlier on, thinkin’ about Mum an’ Dad.
2000		C. Gordon Parallel Lines 77: When she seen I was pis ... peed off about that, she said she was only kidding.
2008		A. Wheatle Dirty South 156: Getting peed off with my boss.