inadvertently
US
UK inadvertently adv: (unintentionally)
SC 非故意地 fēi gù yì de
SC 无意中 fēi gù yì de，wú yì zhōng
Jeff inadvertently broke a glass.
inadvertently adv: (unknowingly, without realising)
SC 不知情地 bù zhī qíng de
SC 不经意间 bù zhī qíng de，bù jīng yì jiān
I inadvertently hurt my friend's feelings when I called her short.