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Definitions

sleeper

[slee-per] / ˈsli pər /


NOUN
late bloomer
Synonyms
Antonyms






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.

"This suggests that dreaming may reshape how brain activity is interpreted by the sleeper: the more immersive the dream, the deeper the sleep feels."

From Science Daily • Mar. 26, 2026

Teo was a good sleeper and she enjoyed the days spent caring for her baby son while on maternity leave.

From BBC • Mar. 13, 2026

AI systems can harbor sleeper agents, trained to behave perfectly under evaluation and activate under specific conditions without detection.

From The Wall Street Journal • Mar. 2, 2026

Unless Snead and his scouts have identified a sleeper pick, this year’s draft class is not brimming with top quarterback prospects other than Fernando Mendoza.

From Los Angeles Times • Mar. 1, 2026

That night, when the boys were both in bed, Johnny heard Rab, usually a heavy sleeper, turning and turning.

From "Johnny Tremain" by Esther Hoskins Forbes