Green’s Dictionary of Slang

1. drunk.

1847

J.M. Field Drama in Pokerville 50: Another whirl on the road announced Dr. Slunk, and that gentleman, tolerably ‘fired up’ and in evident ill humour, ‘paraded himself’.

2. (US) angry.

1956		N. Algren Walk on the Wild Side 83: Crip got all fired up about somethin’.
1986		Eble Campus Sl. Mar. 4: fired up – angry.
2006		C. Hiaasen Nature Girl 78: His mother frowned [...] Fry didn’t want to get her fired up, so he said nothing.
2012		T. Robinson ‘Saint of Gunners’ in Dirty Words [ebook] The kid was clearly too fired up to make even the most basic attempts at being inconspicuous.

3. (also fired) energized; thus unfired, unenthusiastic.

1962		K. Amis letter 4 Sept. in Leader (2000) 606: I’ve been fired by your example to attempt an 8 a.m. start to the writing day.
1967–8		Baker et al. CUSS 117: Fired Sexually aroused. Eager for or looking forward to something or someone. [Ibid.] 217: Unfired Not eager for or looking forward to something or someone.
1972		D. Jenkins Semi-Tough 148: There never has been a more fired-up ball player than you.
1985		N. Pileggi Wiseguy (2001) 165: Our guys seemed to get all fired up.
1991		L. Bing Do or Die (1992) 49: You gets fired up, like you can beat anybody up then.
1992		D. Pinckney High Cotton (1993) 7: Surrounded by fired-up types, Grandfather began to bother their heads with visions of his own.
1992		M. Coleman Fatty 206: [T]his was my first Test, I was really fired up and I thought, ‘I’m going to go on with this [...] I’m going to give it everything I’ve got’.
1999		K. Sampson Powder 33: Few things gave him pleasure. He could not get fired up.
2000		Observer Mag. 25 Jan. 31: Their fired-up, wired-up new album.
2001		I. Welsh Glue 85: Even though [...] Spencer’s stories wir shite, along wi the wine n beer they goat us aw fired up by the time we hit the streets.