DROWSY
drowsy, oscitant, yawning
(adjective) showing lack of attention or boredom; “the yawning congregation”
drowsy, drowsing, dozy
(adjective) 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”
Source: WordNet® 3.1
Etymology
Adjective
drowsy (comparative drowsier, superlative drowsiest)
Inclined to drowse; heavy with sleepiness
Synonyms: lethargic, dozy
Causing someone to fall sleep or feel sleepy; lulling; soporific.
Boring.
Dull; stupid.
Source: Wiktionary
Drow"sy, a. [Compar. Drowsier; superl. Drowsiest.]
1. Inclined to drowse; heavy with sleepiness; lethargic; dozy. "When
I am drowsy." Shak.
Dapples the drowsy east with spots of gray. Shak.
To our age's drowsy blood Still shouts the inspiring sea. Lowell.
2. Disposing to sleep; lulling; soporific.
The drowsy hours, dispensers of all good. Tennyson.
3. Dull; stupid. " Drowsy reasoning." Atterbury.
Syn.
– Sleepy; lethargic; dozy; somnolent; comatose; dull heavy; stupid.
Source: Webster’s Unabridged Dictionary 1913 Edition