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enthusiastic

[en-thoo-zee-as-tik]
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adjective
  1. full of or characterized by enthusiasm; ardent: He seems very enthusiastic about his role in the play.
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Origin of enthusiastic

From the Greek word enthousiastikós, dating back to 1595–1605. See enthusiast, -ic
Related formsen·thu·si·as·ti·cal·ly, adverban·ti·en·thu·si·as·tic, adjectivean·ti·en·thu·si·as·ti·cal·ly, adverbhy·per·en·thu·si·as·tic, adjectivehy·per·en·thu·si·as·ti·cal·ly, adverbnon·en·thu·si·as·tic, adjectivenon·en·thu·si·as·ti·cal·ly, adverbo·ver·en·thu·si·as·tic, adjectiveo·ver·en·thu·si·as·ti·cal·ly, adverbpseu·do·en·thu·si·as·tic, adjectivepseu·do·en·thu·si·as·ti·cal·ly, adverbqua·si-en·thu·si·as·tic, adjectivequa·si-en·thu·si·as·ti·cal·ly, adverbun·en·thu·si·as·tic, adjectiveun·en·thu·si·as·ti·cal·ly, adverb

Synonyms

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eager, fervent, zealous, passionate, vehement, fervid, impassioned.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for enthusiastic

enthusiastic

adjective
  1. filled with or motivated by enthusiasm; fanatical; keen
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Derived Formsenthusiastically, 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 enthusiastic

adj.

c.1600, "pertaining to possession by a deity," from Greek enthousiastikos "inspired," from enthousiazein (see enthusiasm). Meaning "pertaining to irrational delusion in religion" is from 1690s. The main modern sense, in reference to feelings or persons, "intensely eager, rapturous," is from late 18c. Related: Enthusiastically.

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Online Etymology Dictionary, © 2010 Douglas Harper