inadvertent
1. [ adjective ] without intention; especially resulting from heedless action
Synonyms: accidental
Examples:

"with an inadvertent gesture she swept the vase off the table" "accidental poisoning" "an accidental shooting"

Related terms: unintended
Similar spelling:   inadvertently
  inadvertency
  inadvertence
  independent
  independently
  indifferent
  independency
  independence
  indefensible
  indebted
  in_depth
  indifferently