noun
scaredy-cat; easily startled person
Colloquial, often used teasingly or self-deprecatingly for someone who gets frightened easily.
弟はビビリ屋で、ちょっとした物音でも飛び上がる。
My younger brother is a scaredy-cat; he jumps at the slightest noise.
私、ビビリ屋だからホラー映画は絶対に見ない。
I'm such a scaredy-cat, so I never watch horror movies.