Definition, Meaning & Synonyms

sleeper

noun

/ˈsliːpər/

Definition

A sleeper is a person or thing that sleeps, or an object designed for sleeping on, like a bed or a sleeping bag.

Examples

The toddler was a deep sleeper, rarely waking up during the night.
They converted the old train car into a cozy sleeper for camping trips.
In the movie, one of the characters was a sleeper agent, hiding their true identity.

Meaning

The term ‘sleeper’ can refer to someone who is asleep or it can describe something that is meant for sleeping. In specific contexts, it might also refer to something that is hidden or underestimated but becomes significant or valuable later on.