Green’s Dictionary of Slang

1. obsessed with, convinced of; usu. as hipped on [fig. use of the opium smoker’s lying on their hip, thus the image is of addiction, in this case to an idea or person rather than a drug].

1895		J.S. Wood Yale Yarns 262: It’s because you are so hipped on a girl that you think you see one behind every bush!
1914		S. Lewis Our Mr Wrenn (1936) 251: I was pretty sure that I ain’t hipped on her – sort of hypnotized by her – any more. And I found I ain’t!
1919		F. Hurst ‘Oats for the Woman’ in Humoresque 77: She’s got me so hipped I’m crazy.
1927		K. Nicholson Barker II ii: I ain’t got a mind of mine own where the kid’s concerned, I’m so hipped on him.
1929		C. Coe Hooch! 13: You’re just hipped on this prohibition racket.
1935		H. McCoy They Shoot Horses, Don’t They? 124: You’re hipped on the subject of horses.
1947		‘F. Bonnamy’ Self Portrait of Murder (1951) 52: Keys! [...] You’re hipped on keys again.
1953		S. Bellow Augie March (1996) 23: Both Coblin and he were hipped on superabundance.
1977		(con. 1949) J.G. Dunne True Confessions (1979) 165: It was funny about Corinne. She seemed as hipped on Des as Mary Margaret.
2010		J. Ellroy Hilliker Curse 12: She was hipped to a house in the San Gabriel Valley.
2021		J. Ellroy Widespread Panic 110: ‘Steve’s hipped on the A-bomb like nobody I’ve ever seen’.

2. (US black, also hip on) aware, well-informed; often ext. as hipped to the play, hipped to the jive [hip adj.].

1920		F.S. Fitzgerald This Side of Paradise in Bodley Head Scott Fitzgerald III (1960) 228: I’m hipped on Freud and all that.
1936		Archie Seale Man About Harlem 1 Aug. [synd. col.] The chicks up in Harlem arte hipped to that jive.
1935		H. McCoy They Shoot Horses, Don’t They? in Four Novels (1983) 74: You’re hipped on the subject of waves.
1944		D. Burley Orig. Hbk of Harlem Jive 41: I must splash my salties: / But they are brinies, my queen, that are hipped to the play.
1947		Esquire Apr. 76: ‘Are there any squares in this outfit?’ ‘No, man, we’re all hipped.’.
1947		M.H. Boulware Jive and Sl. n.p.: Hipped to the jive ... Know the latest.
1951		P. Whelton In Comes Death 71: Garry, you’re hipped on this Parrish kid being in the clear.
1966		T. Keyes All Night Stand 64: I stopped one young kraut who looked like he might be hipped up on clubs and beat.
1967		P. Thomas Down These Mean Streets (1970) 223: We fished real close and felt each other up. She had a couple of kids from some other cat, so she was hip on what a man dug.
1968		‘Hy Lit’ Hy Lit’s Unbelievable Dict. of Hip Words 1: all woke up – Educated, well-informed; you dig the scene, you’ve been hipped and you know what’s happening.
1978		R. Charles Brother Ray 215: There are lots of cats who do the same thing [i.e. promiscuity]. They conceal it, though [...] You’ll have to wait till they die before you’re hipped to what’s actually coming down.
1986		J. Ellroy Suicide Hill 1260: Kapek, hipped by McManus to his penchant for burglary, was safeguarding the investigation.
1996		H. Roth From Bondage 178: I know you think I’m hipped on the subject.