having the power or quality of deciding; putting an end to controversy; crucial or most important: Your argument was the decisive one.
characterized by or displaying no or little hesitation; resolute; determined: The general was known for his decisive manner.
indisputable; definite: a decisive defeat.
unsurpassable; commanding: a decisive lead in the voting.

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

Synonyms for decisive Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for decisiveness

Contemporary Examples of decisiveness

Historical Examples of decisiveness

  • 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



influential; conclusivea decisive argument
characterized by the ability to make decisions, esp quickly; resolute
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.

Online Etymology Dictionary, © 2010 Douglas Harper