beat
beating
bicker
dance
flap
flick
flicker
flip
flit
flop
flutter
go pitapat
gutter
hover
palpitate
palpitation
pitapat
pitter-patter
pulse
quaver
quiver
rag
shake
slat
splutter
sputter
tatter
teeter
throb
wave
waver
move back and forth
flittered
flittering
flitters
'thopter
copter
flier
fliers
groundcar
helo
jet-powered
runabout
skimmer