afraid
affrighted
aghast
alarmed
alerted
all nerves
anxious
apprehensive
aroused
consternated
daunted
dismayed
disquieted
edgy
excitable
fearful
high-strung
in a fright
in a funk
irritable
nerves on edge
nervous
nervy
on edge
overstrung
panicky
scared
scary
startled
terrified
uneasy
brightened
enlightened
heightened
lightened
tightened
unenlightened