Green’s Dictionary of Slang

(US campus) excellent.

1885		C.F. Lummis letter 10 Jan. in Byrkit Letters from the Southwest (1989) 244: I undoubtedly acquired for myself thereby the reputation of a blooming crank.
1889		C. Deveureux Venus in India II 275: With my fingers still throbbing from these exquisite contacts with two such blooming cunts.
1896		W.C. Gore Student Sl. in Cohen (1997) 18: blooming a. 1. Very good; first rate.