inadvertently
adv.
1670s, literally "inattentively," hence "unintentionally;" see inadvertent + -ly(2).
| 词汇 | inadvertently | 
| 词根词缀 | Online Etymology Dictionary inadvertently adv. 1670s, literally "inattentively," hence "unintentionally;" see inadvertent + -ly(2). | 
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