hexakosioihexekontahexaphobia
octophobia
triskaidekaphobia
dread
ph33r
clithrophobia
petrifying
fearing
shitting planks
omphalophobia
piss one's pants
crap one's pants
paraskavedekatriaphobia
friggatriskaidekaphobia
phobiaphobia
panic attack
scare
petrified
knee-trembling
chilling
fearful
fright
affright
frighten
scaaared
thanatophobia
flip one's lid
claustrophobia
scarily
out of one's skin
jerran
fear
eleutherophobia
ambulophobia
overfearfulness
ascared
terrifiedness
alarmingly
concerned
stasiphobia
afraidly
quakingly
fearfully
nomatophobia
gliff
numerophobia
freaky
scareful
stasibasiphobia
stygiophobia