scare the life out of
scare the living daylights out of
put the shits up someone
scarecrow
make someone's hair stand on end
freak out
do someone a frighten
scare the hell out of
geek out
scare the shit out of
scare the pants off
scare someone to death
frighten the life out of someone
fray
put the heart across one
worry someone sick
feared
give someone the shits
out of one's skin
terror
fearfest
spook
scare someone out of their wits
jump in one's skin
spook out
fear
put the fear of God into
panic
overscare
panicmongering
flay
warn
scaringly
send shivers down someone's spine
fearfully
pant-wettingly
bescare
fearscape
have the wind up
curl someone's hair
fearmonger
dreadnought
scare
make someone's flesh creep
terrify
turn a hair
quake in one's boots
concern
paranoiacally
brick it