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Synonyms

phenomenal

American  
[fi-nom-uh-nl] / fɪˈnɒm ə nl /

adjective

  1. highly extraordinary or prodigious; exceptional.

    phenomenal speed.

    Synonyms:
    unprecedented, surpassing, outstanding, uncommon
  2. of or relating to phenomena.

  3. of the nature of a phenomenon; cognizable by the senses.


phenomenal British  
/ fɪˈnɒmɪnəl /

adjective

  1. of or relating to a phenomenon

  2. extraordinary; outstanding; remarkable

    a phenomenal achievement

  3. philosophy known or perceived by the senses rather than the mind

"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

Other Word Forms

  • nonphenomenal adjective
  • nonphenomenally adverb
  • phenomenality noun
  • phenomenally adverb
  • semiphenomenal adjective
  • semiphenomenally adverb
  • unphenomenal adjective
  • unphenomenally adverb

Etymology

Origin of phenomenal

First recorded in 1815–25; phenomen(on) + -al 1

Explanation

If you think something is amazing, astounding, or marvelous, you can also call it phenomenal. Your dog's phenomenal performance at the agilty competition earned her a blue ribbon — and a handful of biscuits. Phenomenal things aren't just cool — they're truly remarkable and possibly even unique. Your sister's campaign to raise money for cancer research, which amassed a million dollars in two weeks? That's phenomenal. And Serena Williams, having won an unprecedented 23 Grand Slam titles, is without question a phenomenal tennis player. This extraordinary word comes from the relatively ordinary Greek phainomenon, "appearance," and its Proto-Indo-European root bha-, "to shine."

Keep Reading on Vocabulary.com

Vocabulary lists containing phenomenal

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.

Moreover, a bitter Musk, he said, "will do anything he can to attack OpenAI" out of regret at leaving a project that found phenomenal success after his departure.

From Barron's • Apr. 28, 2026

"I think that when Arsenal wake up, they can be absolutely phenomenal and they're also very creative. If they get this right then they can stay where they are."

From BBC • Apr. 23, 2026

“She has done a phenomenal job in her role by protecting American workers, enacting fair labor practices, and helping Americans gain additional skills to improve their lives.”

From Salon • Apr. 20, 2026

The protagonist is named Tree Tremont, a phenomenal multiracial golfer with an overbearing black father, an attractive wife, two young children and a squeaky-clean public image.

From The Wall Street Journal • Mar. 31, 2026

“That’s a phenomenal idea, Frank. Speaking of which, whatever happened to that last book you were working on?”

From "Miss Peregrine's Home for Peculiar Children" by Ransom Riggs