'Decisively' definitions:

Definition of 'decisively'

(from WordNet)
adverb
With firmness; "`I will come along,' she said decisively" [syn: decisively, resolutely] [ant: indecisively]
adverb
With finality; conclusively; "the voted settled the argument decisively" [ant: indecisively]
adverb
In an indisputable degree; "the Fisher Act of 1918 decisively raised their status and pay"

Definition of 'Decisively'

From: GCIDE
  • Decisive \De*ci*sive\, a. [Cf. F. d['e]cisif. See Decision.]
  • 1. Having the power or quality of deciding a question or controversy; putting an end to contest or controversy; final; conclusive. "A decisive, irrevocable doom." --Bates. "Decisive campaign." --Macaulay. "Decisive proof." --Hallam. [1913 Webster]
  • 2. Marked by promptness and decision. [1913 Webster]
  • A noble instance of this attribute of the decisive character. --J. Foster.
  • Syn: Decided; positive; conclusive. See Decided. -- {De*ci"sive*ly}, adv. -- {De*ci"sive*ness}, n. [1913 Webster]