unsteady
agitated
ague
all shook up
all-overish
aquiver
aspen
bashful
bumpiness
chattering
chorea
cold shivers
cowardly
didder
diffident
disquiet
disquietude
dithers
fearful
fearing
fearsome
fidgetiness
fidgeting
fidgets
fidgety
fits and starts
flutter
fluttery
goosy
heaving
in a quiver
in fear
inquietude
jactation
jactitation
jerkiness
jittery
joltiness
jumpy
mousy
nervous
palpitation
palsied
palsy
panting
pitapat
pitter-patter
quaking
assembling
dissembling
resembling