Dilatory: (adj) (A) Characterized by procrastination (B) Tending or intended to cause delay
Languid: (adj) (A) Lazily slow or relaxed (B) Lacking spirit or energy
Lethargy: (noun) Drowsy or sluggish indifference; apathy
Quiescent: (adj) In a condition of inactivity or rest
Repose: (noun) (A) The act or condition of resting; relaxation (B) Peace of mind; composure
Sloth: (noun) Laziness; indolence
Somnambulate: (verb) To walk while asleep
Somnolence: (noun) Drowsiness; sleepiness
Soporific: (adj) Causing or tending to cause sleep
Stupor: (noun) A condition of reduced sensibility or consciousness; daze