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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.

There’s also enthusiasm around AI increasing productivity, bringing inflation down and that company spending can keep the economy humming, she said.

From MarketWatch • Jun. 21, 2026

“In the near term, the dollar may enjoy post-Fed enthusiasm for a bit longer, with markets probably keen to fully price two hikes by December at the first strong data print.”

From The Wall Street Journal • Jun. 19, 2026

Among the most ambitious and challenging ideas riding this wave of enthusiasm is something that sounds almost like science fiction: orbital data centers.

From Science Daily • Jun. 19, 2026

Conlon’s pre-concert talks before every performance have become standing-room-only audience rituals on the second floor of the Dorothy Chandler Pavilion, where he shares his enthusiasm for, in particular, Mozart, Wagner and Verdi.

From Los Angeles Times • Jun. 18, 2026

Handsome looked upon the river with something less than enthusiasm.

From "The Very, Very Far North" by Dan Bar-el

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