comport oneself
phrasal-verb
UK: /kəmˌpɔːt wʌnˈself/
US: /kəmˌpɔːrt wʌnˈself/
To behave in a particular way, especially in public or formal situation; to conduct oneself.
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You should comport oneself with grace.
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It is important to comport oneself with dignity during such a solemn occasion.