inadvertent
adjective
[ ˌɪnədˈvəːt(ə)nt ]
• not resulting from or achieved through deliberate planning.
• "an inadvertent administrative error occurred that resulted in an overpayment"
Similar:
unintentional,
unintended,
accidental,
unpremeditated,
unplanned,
unmeant,
innocent,
uncalculated,
unconscious,
unthinking,
unwitting,
involuntary,
chance,
coincidental,
careless,
thoughtless,
Origin:
mid 17th century (earlier (late Middle English) as inadvertence ): from in-1 ‘not’ + Latin advertent- ‘turning the mind to’ (from the verb advertere ).