Green’s Dictionary of Slang

1. (US) furious.

1872		J.D. McCabe Lights & Shadows 219: ‘Well, he was the maddest fellow you ever seen; he was hoppin’!’.
1999		(con. 1916) R. Doyle A Star Called Henry (2000) 93: Watch it, lads. Jimmy’s hopping.

2. (US teen) tense, exciting, lively.

1956		J. Stearn Sisters of the Night 48: Inside [the bar] things were hopping.
1973		E.F. Droge Patolman 154: [O]n some occasions Brooklyn was hopping so much that there wasn’t an available cell in the entire borough.
1991		D. Gaines Teenage Wasteland 75: 7-Eleven is hopping. Six or seven cars are parked, filled with kids out to party tonight.
1997		S. Powter Sober – and Staying That Way 47: The party is hopping, everyone is drinking up, the exotic drinks are being created and distributed left, right, and from control center, the bar.
2001		Permenter & Bigley Romantic Escapes in the Caribbean 202: After midnight the pace picks up [...] The party is hopping by 3am.

3. (Irish) crazy.

1996		(con. 1970) G. Moxley Danti-Dan in McGuinness Dazzling Dark (1996) I i: My head’s shagging hopping.
2001		S. King Dreamcatcher 613: Thank God, thank Christ, thank Okeefenoke and all the hopping ragheads.

4. as infix.

1963

K. Waterhouse Jubb (1966) 138: Bloody sodding hellfire Jesus Christ All-hopping Mighty!