Languid
Slow, lacking energy or spirit
Dilatory
Intended to delay
Lethargy
A severe lack of energy, inactivity
Melancholy
Deep sadness or depression
Quiescent
Being still, quiet
Repose
Rest, relaxation
To lie down and rest
Sloth
Laziness, avoiding work
Somnambulate
To sleepwalk
Soporific
Causing sleep
Stupor
A confused condition of reduced continuousness