adj.粗心的，不留意的；adj.不故意的
Merriam-Webster Online Dictionary
inadvertent (adjective)1.
not focusing the mind on a matter - inattentive
2.
- unintentional an inadvertent omission
Merriam-Webster Online Thesaurus
inadvertent (adjective)happening by chance
SYNONYMS:
casual, chance, fluky ( flukey), fortuitous, inadvertent, incidental, unintended, unintentional, unplanned, unpremeditated, unwittingRELATED WORDS:
coincidental; freak, odd; aimless, arbitrary, desultory, haphazard, random; uncertain, unexpected, unforeseeable, unforeseen; coerced, forced, involuntary; unconscious, unpromptedNEAR ANTONYMS:
certain, destined, expected, fixed, foreordained, foreseeable, foreseen, inevitable, predestined, predetermined, predictable, preordained, prescribed, sure; conscious, freewill, knowing, unforced, voluntary, volunteer, willful ( wilful)