IPA: /ˌʌnəˈmjuːzd/
KK: /ʌnəˈmjuzd/
Not feeling entertained or finding something funny; often showing displeasure or indifference.
She remained unamused by his jokes, crossing her arms in annoyance.
Unamused → It is formed from "un-" (meaning not) and "amused" (from Old French *amuser*, meaning to divert or entertain). The word "unamused" means not entertained or not finding something amusing.
Think of 'not' ('un-') feeling 'entertained' ('amuser') — that's why unamused means not finding something funny.