unaccustomed
🇺🇸
/ˌʌnəˈkʌstəmd/
🇬🇧
/ˌʌnəˈkʌstəmd/
Not familiar with something because you do not do it often.
I am unaccustomed to being told what to do.
人に何をすべきか言われることに不慣れです。
Not common or regular for someone.
I was surprised by her unaccustomed silence.
彼女の不慣れな沈黙に驚きました。