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decisive

[dih-sahy-siv] /dɪˈsaɪ sɪv/
adjective
1.
having the power or quality of deciding; putting an end to controversy; crucial or most important:
Your argument was the decisive one.
2.
characterized by or displaying no or little hesitation; resolute; determined:
The general was known for his decisive manner.
3.
indisputable; definite:
a decisive defeat.
4.
unsurpassable; commanding:
a decisive lead in the voting.
Origin
1605-1615
1605-15; < Medieval Latin dēcīsīvus, equivalent to Latin dēcīs(us) (see decision) + -īvus -ive
Related forms
decisively, adverb
decisiveness, noun
nondecisive, adjective
nondecisively, adverb
nondecisiveness, noun
predecisive, adjective
predecisively, adverb
Synonyms
1. conclusive, final. 2. firm.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples for decisive
  • But permanent relocation is a more decisive process.
  • The achievements of the deceivers were invaluable if not always decisive.
  • The electoral defeat was decisive.
  • Kirk was thoughtful and sympathetic but also decisive and combative.
  • We urgently need decisive leadership.
  • The timing of the goals was decisive.
  • In addition to contributing decisively to the achievements of the army, its use could have saved many lives and much equipment.
  • The results are clear-cut and decisive, the majorities are significantly high.
  • During the demo, every question was answered correctly—the decisive factor came down to timing.
  • The Internet is the decisive step in eradicating borders for both ideas and commerce.
British Dictionary definitions for decisive

decisive

/dɪˈsaɪsɪv/
adjective
1.
influential; conclusive a decisive argument
2.
characterized by the ability to make decisions, esp quickly; resolute
Derived Forms
decisively, adverb
decisiveness, noun
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for decisive
adj.

1610s, from Medieval Latin decisivus, from Latin decis-, past participle stem of decidere (see decide). Related: Decisively; decisiveness.

Online Etymology Dictionary, © 2010 Douglas Harper
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