The Collaborative International Dictionary of English v.0.48:
Brilliantly \Bril"liant*ly\, adv. In a brilliant manner. [1913 Webster]WordNet (r) 3.0 (2006):
brilliantly adv 1: with brightness; "the stars shone brilliantly"; "the windows glowed jewel bright" [syn: brilliantly, brightly, bright] 2: in an extremely intelligent way; "he solved the problem brilliantly"