slumberous
AdjectiveWordNet 3.0
Webster's Dictionary (GCIDE)
Slumberous \Slum"ber*ous\, a.
1.Inviting slumber; soporiferous. "Pensive in the slumberous shade." --Pope. [1913 Webster]
2.Being in the repose of slumber; sleepy; drowsy. [1913 Webster]
His quiet and almost slumberous countenance.— Hawthorne.[1913 Webster]