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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

Boehringer Ingelheim, the developer of Pramipexole - the Parkinson's drug with impulsive behaviours listed as "uncommon" - said the regulator had approved its leaflets and that it was committed to improving patient safety.

From BBC • Mar. 28, 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

He noted the amount of paint splatter on Islas was uncommon for the weapon’s marking cartridges.

From Los Angeles Times • Mar. 19, 2026

I was happy to see they was still sleeping for it was uncommon to spend the day alone with my father.

From "Life Is So Good" by George Dawson

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