sporadic
alternate
alternating
arrested
beating
broken
broken off
capricious
careening
catchy
checked
chopped-off
choppy
circling
cyclic
cyclical
decousu
desultory
deviative
disconnected
discontinued
discontinuous
discrete
disjunctive
eccentric
episodic
epochal
erratic
even
every other
fitful
flickering
fluctuating
gusty
guttering
halting
herky-jerky
heteroclite
immethodical
incoherent
inconstant
infrequent
intermissive
intermitting
interrupted
inter
inter-
intermittence
intermittency
ceaseless
faint
incessant
momentary
muffle
occasional
periodic
rhythmic
spasmodic
concomitant
constant