scared stiff
flip one's lid
quake in one's boots
ambulophobia
scaredly
scaaared
gripped
scared
scareable
chemophobic
petrifying
brick it
petrified
ascared
kinesophobia
panic-stricken
have one's heart in one's boots
piss one's pants
piss oneself
scared to death
crap one's pants
shit scared
bundle of nerves
frightsome
stasibasiphobia
stasiphobia
willies
take fright
crap oneself
quakingly
cold chills
chilling
aviatophobia
pteromerhanophobia
aviophobia
height-fear
terrified
crawlies
hair-raising
keyed up
scared shitless
frightened
scared spitless
amaxophobia
scary
panicked
panicky
shitting planks
frighten
fright
panic-struck
fear
affright
scare
eerie
fearfulness
haphephobia
apprehend
tropophobia
panic
windy
have kittens
aphenphosmphobia
overfearfulness
creeps
out of one's skin
fret
poopless
monophobia
intimidating
acrophobia
trepidatious
sweats
daunting
shy
heebie-jeebies
anxious
afraidly
fearing
jitters
screaming meemies
phobophobia
inhibition
kathisophobia
afraid
nervous as a whore in church
maniaphobia
afeared
hagridden
nervous as a cat
fraidy
'fraid
sitzpinkler
numb