unperturbed
adjective/ˌʌnpəˈtɜːbd/
/ˌʌnpərˈtɜːrbd/
- not worried or anxious
- She seemed unperturbed by the news.
- The local people remained calm and apparently unperturbed.
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unperturbed
Definition of unperturbed adjective from the Oxford Advanced Learner's Dictionary