unwonted
🇺🇸
/ʌnˈwəʊntɪd/
🇬🇧
/ʌnˈwəʊntɪd/
not common or typical
The teacher was surprised by the student's unwonted silence during class.
老師對學生在課堂上的不同尋常的沉默感到驚訝。