unintentional /ˌʌnɪnˈtɛnʃənl̟/ adjective /ˌʌnɪnˈtɛnʃənl̟/
adjective
Learner's definition of UNINTENTIONAL
: not done in a way that is planned or intended : not intentional非计划的;非故意的;无心的 -
If I said something to offend you, I swear it was unintentional.如果我说过什么冒犯你的话,我发誓那是无意的。
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an unintentional omission/error无心的疏忽/错误