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See more synonyms for decisive on Thesaurus.com
  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.
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Origin of decisive

1605–15; < Medieval Latin dēcīsīvus, equivalent to Latin dēcīs(us) (see decision) + -īvus -ive
Related formsde·ci·sive·ly, adverbde·ci·sive·ness, nounnon·de·ci·sive, adjectivenon·de·ci·sive·ly, adverbnon·de·ci·sive·ness, nounpre·de·ci·sive, adjectivepre·de·ci·sive·ly, adverb


See more synonyms for decisive on Thesaurus.com
1. conclusive, final. 2. firm.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for decisiveness

Contemporary Examples

Historical Examples

  • Finally he spoke with the decisiveness characteristic of him.

    Within the Law

    Marvin Dana

  • It had lost something of its harshness––something, too, of its decisiveness.

    The Web of the Golden Spider

    Frederick Orin Bartlett

  • The conclusion is expressed with a decisiveness that almost seems crude.

  • "You must leave her," she urged, with a new touch of decisiveness.

    Jennie Gerhardt

    Theodore Dreiser

  • Abruptly Parish Thornton admonished him in the quiet tone of decisiveness.

    The Roof Tree

    Charles Neville Buck

British Dictionary definitions for decisiveness


  1. influential; conclusivea decisive argument
  2. characterized by the ability to make decisions, esp quickly; resolute
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Derived Formsdecisively, adverbdecisiveness, 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

Word Origin and History for decisiveness



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

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Online Etymology Dictionary, © 2010 Douglas Harper