'Infernally' definitions:

Definition of 'infernally'

From: WordNet
adverb
Extremely; "infernally clever"; "hellishly dangerous" [syn: infernally, hellishly]

Definition of 'Infernally'

From: GCIDE
  • Infernally \In*fer"nal*ly\, adv. In an infernal manner; diabolically. "Infernally false." --Bp. Hacket. [1913 Webster]