abeyance
acedia
adynamia
anemia
apathy
atony
blah feeling
bloodlessness
blues
boredom
brain fag
cachexia
cachexy
catalepsy
catatonia
cautiousness
circumspection
coma
cowardice
creeping
deadliness
deathliness
debilitation
debility
deliberateness
deliberation
depression
doldrums
dormancy
doziness
drawl
dreaminess
drowsiness
dullness
dumps
enervation
enfeeblement
ennui
entropy
etiolation
exhaustion
eyestrain
faintness
fatigue
feebleness
flabbiness
flaccidity
easiness
inactiveness
inactivity
inertia
relaxation
languid
languish
languorous
coldness
despondency
dizziness
heaviness
indolence
lassitude
listlessness
numbness
perplexity
restlessness
timidity
torpor
uneasiness
weariness