The Collaborative International Dictionary of English v.0.48:
Raving \Rav"ing\ (r[=a]v"[i^]ng), a. Talking irrationally and wildly; as, a raving lunatic. -- Rav"ing*ly, adv. [1913 Webster]WordNet (r) 3.0 (2006):
ravingly adv 1: in a raving manner; "raving mad" [syn: raving, ravingly]