unsteady
adrift
afloat
alternating
amorphous
broken
capricious
careening
catchy
changeable
changeful
choppy
desultory
deviable
deviative
disconnected
discontinuous
dizzy
eccentric
erratic
fast and loose
fickle
fitful
flickering
flighty
flitting
fluctuant
fluctuational
freakish
giddy
guttering
halting
harmonic
herky-jerky
heteroclite
immethodical
impetuous
impulsive
inconsistent
inconstant
indecisive
infirm
intermittent
intermitting
irregular
irresolute
irresponsible
jerky
libratory
lurching
mazy