Voozh

From Wiktionary

sleep is on the Basic English 850 List.

sky - sleep - slip

sleep is one of the 1000 most common headwords.

size - sleep - slight

Verb

Plain form
sleep

Third-person singular
sleeps

Past tense
slept

Past participle
slept

Present participle
sleeping

This baby is sleeping

(intransitive) If you sleep, you rest quietly with eyes shut, usually in bed for many hours at night.
I need to sleep now because I'm tired.
(informal) If you sleep with someone, you have sex with them.
I haven't slept with my husband in like eight months.