have the wind up
get the wind up
put the wind up
fray
tremble
have one's heart in one's boots
flay
brick it
spook
spook out
apprehend
quake in one's boots
dread
gloppen
run scared
shake
crap oneself
fear
terrifyingness
fearfully
affright
freak out
funk
curl someone's hair
frighten
frighten the piss out of
glope
harrow
fearsomely
make someone's hair stand on end
scary
crap one's pants
piss one's pants
panic
afraid
not bear thinking about
geek out
flaysome
perturb
frightenedness
fearlike
pavid
frightened
trepidly
scare the hell out of
do someone a frighten
make someone's skin crawl
scared
frighteningly
frightenable