incomprehensible
inexplicable
irresponsible
adrift
afloat
agnostic
aimless
alternating
ambiguous
amorphous
antic
baffling
bizarre
capricious
casual
causeless
chancy
changeable
changeful
chartered
designless
desultory
deviable
dicey
disobedient
dizzy
doubting
driftless
dysteleological
eccentric
enwrapped in mystery
equivocal
erratic
excepted
excused
exempt
exempted
extraordinary
fanciful
fantastic
fast and loose
favored
fickle
fitful
flickering
flighty
flitting
fluctuating
freakish
giddy
haphazard
headstrong
heady
disturb
indescribable
instinctive
intolerable
irrational
irresistible
momentary
morbid
perverse
unexplained
unnatural
whimsical
accountable
countable
insurmountable