unintended
arbitrary
automatic
capricious
careless
casual
culpably negligent
derelict
disregardant
disregardful
distracted
distrait
feckless
gut
heedless
ill-advised
ill-considered
ill-devised
inattentive
inconsiderate
incurious
indeliberate
indifferent
inobservant
involuntary
laissez-faire
lax
loose
neglectful
neglecting
negligent
noninterfering
nonrestrictive
off-guard
overly permissive
permissive
procrastinating
reasonless
reflex
reflexive
regardless
relaxed
remiss
scamping
skimping
slack
slighting
advert
advertent
inadvertently
accidental
coincidental
deliberate
disastrous
fortuitous
grievous
guileless
ill-timed
incidental
indiscreet
intentional
irreparable
outrageous
overt
premature
simultaneous
unauthorized
unavoidable
unintentional
untimely
unwanted