'Decidedly' definitions:

Definition of 'decidedly'

From: WordNet
adverb
Without question and beyond doubt; "it was decidedly too expensive"; "she told him off in spades"; "by all odds they should win" [syn: decidedly, unquestionably, emphatically, definitely, in spades, by all odds]

Definition of 'Decidedly'

From: GCIDE
  • Decidedly \De*cid"ed*ly\, adv. In a decided manner; indisputably; clearly; thoroughly. [1913 Webster]

Synonyms of 'decidedly'

From: Moby Thesaurus