- drowsy, drowsing, dozy - half asleep; "made drowsy by the long ride"; "it seemed a pity to disturb the drowsing (or dozing) professor"; "a tired dozy child"; "the nodding (or napping) grandmother in her rocking chair"
Antonym: awake (indirect, via asleep)
- drowsy, oscitant, yawning - showing lack of attention or boredom; "the yawning congregation"
Antonym: attentive (indirect, via inattentive)