unnervingly
🇺🇸
/ˌʌnˈnɜːrvɪŋli/
🇬🇧
/ˌʌnˈnɜːvɪŋli/
causing someone to feel anxious or scared
The way he stared at us was unnervingly intense.
彼が私達にじっと見つめる様子は非常に強い印象を与えました。