Slum'ber·ous adjective 1. Inviting slumber; soporiferous. 'Pensive in the slumberous shade.' Pope. 2. Being in the repose of slumber; sleepy; drowsy. « His quiet and almost slumberous countenance.» Hawthorne. Found on http://www.encyclo.co.uk/webster/S/125
slumberyadjective inclined to or marked by drowsiness; `slumberous (or slumbrous) eyes`; ``slumbery` is archaic`; `the sound had a somnolent effect` Found on https://www.encyclo.co.uk/local/20974