Sleeplessness,
that; unmistakable,
unavoidable, unaware, off-key,
flat, unmelodic, petulant, spiteful, pest.

Unsleep,
that; unwholesome, unwelcome, unwanted,
out-of-tune, torturous, off-kilter,
flower wiltering, bitch.

Insomnia,
that; wicked, silent, jarring, noisy, tenored-
siren from the deep. In not-so short-ish; a deranged, depriving, depraving, depressing, CUNT.

Nightened, are; Slumber's...