afraid
all nerves
apprehensiv
apprehensive
chicken
chickenhearted
coward
cowardly
cowed
daunted
dismayed
edgy
excitable
fainthearted
fearful
frightened
funking
funky
henhearted
high-strung
in a panic
intimidated
irritable
lily-livered
milk-livered
milksoppish
milksoppy
mousy
nerves on edge
nervous
nervy
on edge
overstrung
overtimid
overtimorous
panic-prone
panic-stricken
panic-struck
panicked
petrified
pigeonhearted
rabbity
sissified
sissy
soft
terrified
timid
anguished
breathless
claustrophobic
convulsive
dizzy
ear-piercing
euphoric
feral
frantic
hysterical
jittery
light-headed
maniacal
raucous
resentful
shaky
uncomprehending
vertiginous
woozy
wordless