Green’s Dictionary of Slang

1. (US) to talk in a petulant or irritating manner.

c.1918		‘We Do Squads Left’ in Peat & Smith Legion Airs (1932) 🎵 140: Yip a little French like the Froggies do.
1922		S. Lewis Babbitt (1974) 83: There’s a swell bunch [....] that love to fire off their filthy mouths and yip that Mike Monday is vulgar.
1931		D. Runyon ‘Lillian’ in Guys and Dolls (1956) 241: The swell-dressed doll near us begins yipping louder than Wilbur is yodelling.
1946		H.A. Smith Rhubarb 187: Mr. Talbot hurriedly yipped into his microphone: ‘A cat has nine lives.’.
1950		Goldin et al. DAUL 243/2: Yip, v. To complain.
1961		R. Gover One Hundred Dollar Misunderstanding 72: Jes hol’ yer yip-yappin mothahjumpin jaw a minit, will ya?
1966		R.H. Rimmer Harrad Experiment 194: ‘Oh my God, Harry,’ I yipped.
1971		F.J. Hardy Outcasts of Foolgarah (1975) 41: His mouth was yip-yapping like a ventriloquist’s doll.
1971		Wodehouse Much Obliged, Jeeves 20: ‘You’re engaged to Florence?’ I yipped.
2000		T. Udo Vatican Bloodbath 63: ‘Guards!’ she yipped.

2. to act in a nervous manner.

1952

(con. 1948) G. Mandel Flee the Angry Strangers 133: You must think you really sent me off yipin this evenin.