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enthusiasm

American  
[en-thoo-zee-az-uhm] / ɛnˈθu ziˌæz əm /

noun

enthusiasm plural
  1. absorbing or controlling possession of the mind by any interest or pursuit; lively interest.

    He shows marked enthusiasm for his studies.

    Synonyms:
    devotion, passion, ardor, zeal, fervor, warmth, eagerness
    Antonyms:
    indifference
  2. an occupation, activity, or pursuit in which such interest is shown.

    Hunting is his latest enthusiasm.

  3. any of various forms of extreme religious devotion, usually associated with intense emotionalism and a break with orthodoxy.


enthusiasm British  
/ ɪnˈθjuːzɪˌæzəm /

noun

  1. ardent and lively interest or eagerness

  2. an object of keen interest; passion

  3. archaic extravagant or unbalanced religious fervour

  4. obsolete possession or inspiration by a god

"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

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Nouns

Etymology

Origin of enthusiasm

First recorded in 1570–80; from Late Latin enthūsiasmus, from Greek enthousiasmós, from enthousí(a) “possession by a god” ( énthous, variant of éntheos “having a god within,” from en- en- 2 + -thous, -theos “possessed by a god” + -ia -y 3 ( def. ) ) + -asmos, variant (after vowel stems) of -ismos -ism; cf. theism ( def. )

Explanation

You might show enthusiasm if you find out that all the shoes are on sale for 70 percent off today. The word enthusiasm indicates intense excitement. The noun enthusiasm comes from the Greek word enthousiasmos, from enthous, meaning “possessed by a god, inspired.” It was originally used in a derogatory sense to describe excessive religious zeal. Today both the religious and derogatory connotations are gone from enthusiasm, but the zeal has survived. Use it to describe great excitement or interest, like what you feel when you’re doing something that you really, really enjoy.

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Vocabulary lists containing enthusiasm

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

It’s hard for me to think about O’Herlihy’s buildings without thinking first about the man himself: his buoyant voice, quick smile and sing-song enthusiasm.

From Los Angeles Times • Jun. 18, 2026

The initial enthusiasm about Smartbird’s AI pivot has largely faded: The stock closed at $3.94 on Tuesday, down 77% since the April 15 announcement.

From MarketWatch • Jun. 17, 2026

Europe's biggest tech trade fair Vivatech opens Wednesday in Paris for a 10th-anniversary edition where enthusiasm for generative AI will rub shoulders with anxiety about the continent's technological dependence.

From Barron's • Jun. 17, 2026

One key question is whether the enthusiasm fueling gains in a relatively small group of crowded bets can broaden to the rest of the market.

From The Wall Street Journal • Jun. 14, 2026

You longtime farmers may laugh at my enthusiasm, but I ask you to think back to your first harvest.

From "Hattie Big Sky" by Kirby Larson

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