WordWeb Online

1. Half asleep
   "made drowsy by the long ride"; "it seemed a pity to disturb the drowsy professor";
   - drowsing, dozy, dopy, dopey
    
2. Showing lack of attention or boredom
   "the drowsy congregation";
   - oscitant, yawning, dopy, dopey

Derived forms: drowsiest, drowsier

See also: asleep, inattentive

Encyclopedia: Drowsy