冷や冷や

ひやひや· also ヒヤヒヤ

to feel chilly; to be afraid; to be frightened; to be nervous

Meanings

Suru verb, Intransitive, Adverb, Adverb (-to)
to feel chilly
to be afraid; to be frightened; to be nervous; to be anxious; to be worried; to be on edge

Example sentences

その銃じゅうどうしたの？本物ほんもの？危あぶないから下おろしなさい。冷ひや冷ひやするから。

What are you doing with that gun? Is that real? Put it down, that's dangerous. You're freaking me out a little.
先さきほどの彼かれらのやり取とりにはひやひやしたよ。まさに一触即発いっしょくそくはつの危機ききだったね。

I was really nervous to see how they dealt with each other just now. I guess things were touch-and-go between them.