DEFINITIONS
The
2019 WORD
OF THE YEAR is...

sleep-in

[ sleep-in ]
/ ˈslipˌɪn /

adjective

live-in(def 1).

noun

a person who sleeps in at a place of employment.

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Words nearby sleep-in

sleep shade, sleep sofa, sleep through, sleep with, sleep-away, sleep-in, sleep-induced apnea, sleep-out, sleep-terror disorder, sleep-wake cycle, sleepcoat

Origin of sleep-in

First recorded in 1950–55; adj., noun use of verb phrase sleep in
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019