scared to death
terrified
fraidy
psyched
'fraid
frit
afeared
ascared
windy
knee-trembling
anxious
trepidant
stiff as a board
panickingly
stiff as a poker
keyed up
nervous as a whore in church
jerran
nervous as a cat
scared shitless
petrified
scared spitless
worrit
stifflike
chemophobic
scaaared
nervous as a long-tailed cat in a room full of rocking chairs
poopless
gripped
flip one's lid
stasiphobia
eerie
nervously
scaredly
overstiff
scared
shit scared
scareable
frightened
algophobia
gliff
rigescent
like a cat on a hot tin roof
sweats
affright
jitters
scare
petrifying
fright
heebie-jeebies