Definitions

countless

[kount-lis] / ˈkaʊnt lɪs /

ADJECTIVE

innumerable

Synonyms

STRONGEST

endless myriad uncounted untold

WEAK

bags of gobs heap immeasurable incalculable infinite innumerous jillion legion limitless loads lots of many measureless mess mint mucho multitudinous numberless oodles passel of peck pile raft scads slew stack tidy sum umpteen uncountable wad whole slew zillion

Antonyms

STRONGEST

few limited

WEAK

calculable countable counted measurable numbered numerable

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.

Tom Dreesen’s legacy will live on through the laughter he created, the barriers he helped break, the entertainers he inspired, and the countless lives he touched.

From Los Angeles Times • Jun. 18, 2026

He said there were countless videos featuring the AI-generated figures with Down syndrome and said the same accounts had been trying to sell identical products using elderly synthetic characters.

From Barron's • Jun. 18, 2026

Finally, after what have seemed like countless false starts, a deal has been agreed by the US and Iran.

From BBC • Jun. 15, 2026

The body uses them to create and repair tissues, produce enzymes, and support countless biological functions.

From Science Daily • Jun. 15, 2026

After thousands of hours of calculations, countless dead ends, and a few brilliant mental leaps, they’d worked out Enigma’s internal wiring.

From "The Bletchley Riddle" by Ruta Sepetys and Steve Sheinkin

Vocabulary lists containing countless

Much Ado: Synonyms for "Many"

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Talk Like Shakespeare Day, List 6

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"Dogs at Work"

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