unintentionally
🇺🇸
/ˌʌnɪnˈtenʃənəli/
🇬🇧
/ˌʌnɪnˈtenʃənəli/
done by chance or without planning
She unintentionally knocked over the glass with her elbow.
她无意中用肘部撞倒了玻璃杯。