inaction, inactiveness, inactivity - the state of being inactive

hibernation - cessation from or slowing of activity during the winter; especially slowing of metabolism in some animals

aestivation, estivation - (zoology) cessation or slowing of activity during the summer; especially slowing of metabolism in some animals during a hot or dry period

slumber - a dormant or quiescent state

repose, rest, ease, relaxation - freedom from activity (work or strain or responsibility); "took his repose by the swimming pool"

vegetation - inactivity that is passive and monotonous, comparable to the inactivity of plant life; "their holiday was spent in sleep and vegetation"