ヒヤヒヤ
Meanings
Suru verb
Intransitive verb
Adverb
Adverb taking と
1. to feel chilly (Usually kana)
2. to be afraid; to be frightened; to be nervous; to be anxious; to be worried; to be on edge (Usually kana)
Other readings
Examples1
先ほど
I was really nervous to see how they dealt with each other just now. I guess things were touch-and-go between them.