1) At ease 2) Napping 3) Not active 4) Observing the Sabbath 5) On a sofa 6) Pausing 7) Quiescent 8) Taking five 9) Taking five on the bench Found on https://www.crosswordclues.com/clue/resting
Rest'ing adjective & noun from Rest , transitive verb & i. Resting spore (Botany) , a spore in certain orders of algæ, which remains quiescent, retaining its vitality, for long periods of time. C. E. Bessey. Found on http://www.encyclo.co.uk/webster/R/64