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Definitions

uncommon

[uhn-kom-uhn] / ʌnˈkɒm ən /
ADJECTIVE
very different
Synonyms
STRONGEST
abnormal bizarre egregious exceptional extraordinary infrequent noteworthy odd peculiar rare remarkable singular startling strange surprising unique unusual
WEAK
aberrant anomalous arcane curious eccentric exotic extreme fantastic few freakish irregular novel original out of the ordinary out of the way outre outré prodigious scarce seldom sporadic unaccustomed unconventional uncustomary unfamiliar unheard of unorthodox weird
Antonyms
STRONGEST
common commonplace customary familiar frequent like nondescript normal ordinary regular similar standard typical usual
WEAK
bad imperfect poor
ADJECTIVE
wonderful, exceptional
Synonyms
STRONGEST
extraordinary noteworthy rare remarkable singular unimaginable unique unparalleled unprecedented unthinkable
WEAK
distinctive incomparable inimitable notable outstanding special superior unwonted
Antonyms
STRONGEST
believable common commonplace normal ordinary regular typical unremarkable usual
WEAK
bad familiar imperfect poor

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.

Palantir’s months-long free customer pilots had no guarantee of a payoff, and it wasn’t uncommon for paying customers to cancel their contracts due to the high cost of Palantir’s products.

From MarketWatch • Apr. 4, 2026

For millions of years, they remained relatively uncommon and were overshadowed by groups such as trilobites.

From Science Daily • Apr. 3, 2026

It’s uncommon to die from flea-borne typhus, but it has occurred in Los Angeles County.

From Los Angeles Times • Apr. 3, 2026

It’s not uncommon that networks won’t pick up a pilot for a full-season order, even after the pilot has been completed.

From Salon • Mar. 26, 2026

“No, no; stay where you are. You are charmingly grouped, and appear to uncommon advantage. The picturesque would be spoilt by admitting a fourth. Good-bye.”

From "Pride and Prejudice" by Jane Austen

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