spook out
scare the hell out of
do someone a frighten
jump in one's skin
flay
spook
crap one's pants
piss one's pants
fearful
fearing
frighten the piss out of
funk
frightsomeness
poopless
timorsome
frightenable
brick it
terrifiedness
frightfulness
put the wind up
fear
overfrighten
startful
scare the shit out of
terrify
scareful
have the wind up
frightenedly
make someone's hair stand on end
frisson
scare someone to death
shiver
frighten the life out of someone
quiver
ph33r
tingle
flaysome
thrill
chill
shudder
run scared
frightenedness
fray
tremble
fearmonger
out of one's skin
petrification
apprehend
eerie
get the wind up