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Definitions

phenomenon

[fi-nom-uh-non, -nuhn] / fɪˈnɒm əˌnɒn, -nən /
NOUN
rare occurrence; wonder
Synonyms
STRONGEST
anomaly aspect circumstance episode event experience fact incident miracle paradox reality sensation
STRONG
abnormality actuality appearance curiosity exception happening marvel nonpareil peculiarity portent prodigy sight spectacle stunner uniqueness
WEAK
one for the books rara avis something else
Antonyms
STRONGEST
usualness
STRONG
normality
WEAK
regularity

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.

That phenomenon stretched to 11 days as of last Thursday.

From MarketWatch • Apr. 6, 2026

Toward the end of the flyby, the astronauts will experience a rare phenomenon: a solar eclipse.

From Barron's • Apr. 5, 2026

Now, as this generation enters the workforce, the phenomenon has reached professional licensing exams—and law firms are adapting, launching programs to support young associates with diagnoses.

From The Wall Street Journal • Apr. 5, 2026

Is the administration not aware of this phenomenon?

From Salon • Apr. 4, 2026

I’m responsible for every subway delay, every road closure, the very phenomenon of wind resistance.

From "What If It's Us" by Becky Albertalli and Adam Silvera

From Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.