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persuasive

[per-swey-siv, -ziv]
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adjective
  1. able, fitted, or intended to persuade: a very persuasive argument.
noun
  1. something that persuades; inducement.

Origin of persuasive

First recorded in 1580–90, persuasive is from the Medieval Latin word persuāsīvus. See persuasible, -ive
Related formsper·sua·sive·ly, adverbper·sua·sive·ness, nounnon·per·sua·sive, adjectivenon·per·sua·sive·ly, adverbnon·per·sua·sive·ness, nounpre·per·sua·sive, adjectiveun·per·sua·sive, adjectiveun·per·sua·sive·ly, adverbun·per·sua·sive·ness, noun

Synonyms

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1. convincing, compelling, forceful.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for non-persuasive

persuasive

adjective
  1. having the power or ability to persuade; tending to persuadea persuasive salesman
Derived Formspersuasively, adverbpersuasiveness, 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 non-persuasive

persuasive

adj.

1580s, from Middle French persuasif, from Medieval Latin persuasivus, from Latin persuas-, past participle stem of persuadere "persuade, convince" (see persuasion). Related: Persuasively; persuasiveness. Replaced earlier persuasible in this sense (see persuadable).

Online Etymology Dictionary, © 2010 Douglas Harper