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influential

[in-floo-en-shuh l]
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adjective
  1. having or exerting influence, especially great influence: three influential educators.
noun
  1. a person who exerts or can exert strong influence: according to influentials of the fashion industry.

Origin of influential

1560–70; < Medieval Latin influenti(a) stellar emanation (see influence) + -al1
Related formsin·flu·en·tial·ly, adverbnon·in·flu·en·tial, adjectivenon·in·flu·en·tial·ly, adverbo·ver·in·flu·en·tial, adjectivequa·si-in·flu·en·tial, adjectivequa·si-in·flu·en·tial·ly, adverbun·in·flu·en·tial, adjectiveun·in·flu·en·tial·ly, adverb

Synonyms

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1. consequential, forceful, important.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for influential

influential

adjective
  1. having or exerting influence
Derived Formsinfluentially, adverb
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 influential

adj.

"powerful," 1650s, from Medieval Latin influentialis, from influentia (see influence). Earlier in an astrological sense (1560s).

Online Etymology Dictionary, © 2010 Douglas Harper