semi-somnolent

adjective

1. sleepy; drowsy.
2. tending to cause sleep.

adjective

1. drowsy; sleepy
2. causing drowsiness

adj.mid-15c., sompnolent, from Old French sompnolent (Modern French somnolent) or directly from Latin somnolentus “sleepy, drowsy,” from somnus “sleep” (see Somnus). Respelled 17c. on Latin model. adj.

1. Drowsy; sleepy.
2. Inducing or tending to induce sleep; soporific.
3. In a condition of incomplete sleep; semicomatose.