unperturbed
🇺🇸
/ˌʌnpərˈtɜːrbd/
🇬🇧
/ˌʌnpəˈtɜːbd/
Calm and not bothered by something.
Even with the sudden noise, she remained unperturbed and continued her work.
突然の騒音があっても、彼女は冷静を保ち、仕事を続けました。