hagride
wrack
overrun
terrorise
do someone a frighten
scare the hell out of
dread
worry
harrow
scarecrow
have the wind up
ball-bust
put the wind up
terrorize
shake
put the shits up someone
make someone's hair stand on end
give someone the shits
bearbait
flay
freak out
spook
panic
squeeze
spook out
put the heart across one
get the wind up
assault
creep out
knit one's brows
send shivers down someone's spine
have one's heart in one's boots
excruciate
unhinge
funk
atray
roust
cut up
kerfuffle
psych
terrify
fray
frighten the piss out of
geek out
dreaden
make someone's blood run cold
tremble
jolt
putrefy
worrit
scare someone to death
scare the life out of
nightmare
run scared
frighten the life out of someone