1. (

• slumberous ,
• slumbrous

) quiet and tranquil; "a slumberous June morning" ;

2. (

• slumberous ,
• slumbery ,
• slumbrous ,
• somnolent

) inclined to or marked by drowsiness; "slumberous (or slumbrous) eyes"; "`slumbery' is archaic"; "the sound had a somnolent effect" ;