slumberous or slumbrous [sluhm-ber-uh s, sluhm-bruh s or sluhm-bruh s]
1. sleepy; heavy with drowsiness, as the eyelids.
2. causing or inducing sleep.
3. pertaining to, characterized by, or suggestive of slumber.
4. inactive or sluggish; calm or quiet.
See more synonyms on Thesaurus.com
Origin: First recorded in 1485-95; slumber + -ous
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