looseness
neglect
neglectfulness
negligence
play
weakness
apathy
callousness
carelessness
cowardice
effeminacy
feebleness
flabbiness
flimsiness
foolhardiness
improvidence
imprudence
inattention
inefficiency
inertness
irresponsibility
laxity
laziness
lethargy
remissness
self-indulgence
shabbiness
shiftlessness
sleepiness
blackness