flay
spook out
fray
funk
brick it
bescare
frighten the piss out of
befright
tremble
spook
make someone's hair stand on end
put the wind up
apprehend
have the wind up
frightfulness
panic
geek out
frighten
get the wind up
fearful
affright
fearfully
frightsomeness
fearingly
terrify
alarm
make someone's skin crawl
jump in one's skin
scarecrow
glope
scare the hell out of
gloppen
frightensome
do someone a frighten
have one's heart in one's boots
freak out
dread
thrill
shiver
chill
flaysome
overfrighten
quiver
tingle
frisson
shudder
put the shits up someone
frightened
rattle
frightsome