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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 of decisive
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. 2015.
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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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