fearingly
fearful
piss one's pants
crap one's pants
quailingly
frit
psyched
eerie
knee-trembling
flay
overfearful
fear
fearing
terrifiedly
shit scared
fearmonger
'fraid
frightenedly
fraidy
afeared
fearfully
shitting planks
dreadingly
spook
poopless
dread
direful
gliff
frightful
worrily
flip one's lid
afraidly
dismayfully
shy
scared spitless
scaredly
panickily
scared shitless
timorsome
scared to death
terrified
worriedly
scare
frighten
affright
fearsomely
fright
overfearfulness
one's heart in one's mouth
frighten the piss out of
tremble
terror
consternated
panic
geek out
cold chills
frightsome
petrified
scaaared
jerran
stuttering
trepidatious
pavid
frightened
brick it
panickingly
cowed
horror
flaysome
overfrighten
scared
out of one's skin
panic attack
have one's heart in one's boots
panickedly
portentously
paranoiacally
apprehend
shudder
ph33r
spooky
run scared
funk
quakingly
troubledly
petrifying
scaringly
dementedly
shudderingly
daunting