slumber

nouns

a natural and periodic state of rest during which consciousness of the world is suspended
"he didn't get enough sleep last night"; "calm as a child in dreamless slumber"
sleep, slumber
is derived from
slumbery
a dormant or quiescent state
slumber
is derived from
slumbrous
is derived from
slumberous
is a type of (narrower)
a state of quiet (but possibly temporary) inaction
"the volcano erupted after centuries of dormancy"
dormancy, quiescence, quiescency

verbs

be asleep
catch some Z's, kip, log Z's, sleep, slumber
is derived from
slumberer