bob
bobble
bounce
bump
didder
dither
falter
grimace
jar
jerk
jig
jigget
jiggle
jog
joggle
jolt
jostle
moue
mow
pout
quake
quaver
quiver
shake
shiver
shock
shudder
snarl
tic
tremble
tremor
twitch
twitter
wobble
wry face
wry mouth
gape
contortion
death-mask
disfigurement
doglike
ear-to-ear
gasp
lipless
little-boy
paroxysm
puckish
pursing
spasm
throes
toothy
travesty
white-toothed
wolfish
wolflike
yelp