Somnolent

I'm especially miserable on Sundays, because the mood in the house turns somnolent and heavy.

His head dropped upon his breast, and yielding to the fatigue he had undergone and the somnolent influence of the fire, he dropped into a deep slumber by the dull red embers that still smouldered in the grate.

One minute she was gazing at a mockup of a space capsule, safely surrounded by old, somnolent men; […]

[…]; and in chronicling the passing parade of Harry's life, the books have also created a Kodachrome-sharp picture of American life - the psychic ups and downs, enthusiasms and reversals experienced by this nation as it moved from the somnolent 50's through the upheavals of the 60's and 70's into the uncertainties of the 80's.

My tiger is deep in somnolent sleep dreaming of chases remembered! His keen eyes are glinting! He dreams of a sprinting sambar who'll soon be dismembered!

As she reached toward the last few fiddleheads growing on the second hummock, her hand froze. She heard the somnolent buzzing of flies again.