noun
coward; scaredy-cat; being easily frightened
Colloquial noun for a person who is easily scared or for the state of being timid. Often used in casual conversation.
彼はビビリだから、お化け屋敷には絶対に入らない。
He's such a scaredy-cat, so he would never go into a haunted house.
ビビリな性格を直したい。
I want to overcome my timid nature.
noun
chatter; undesirable vibration in machine tools
Technical term in machining for unwanted vibration that affects precision. Not commonly known outside engineering contexts.
この旋盤はビビリが発生しやすい。
This lathe is prone to chatter.
Derived from the verb びびる (to be scared), which itself is of uncertain origin, possibly mimetic. The noun form ビビリ is a colloquial nominalization.