afraidShe was afraid of the dark.
frightenedDon't be frightened, my dog is quite friendly.
scaredAre you scared of spiders?
terrifiedI'm terrified of flying.
panic-strickenShe was panic-stricken when her little boy disappeared.
worriedI'm worried that something will go wrong.
nervousStop playing with that knife - you're making me nervous!
apprehensiveHe's a bit apprehensive about living away from home.
uneasyAll this quiet makes me uneasy.
give you the creepsBeing alone in that big house gives me the creeps.
hair-raisingThe pilots are trained to do hair-raising stunts at low altitude.