inadvertent russian

• неча́янно

  by accident, accidentally, inadvertently

• ненаро́ком

  inadvertently, by accident

• неча́янный

  unintentional, inadvertent (adj)

• да́вленый

  crushed, spoiled by inadvertent pressing

• неумы́шленный

  unpremeditated, inadvertent- unintentional

Examples

• Я пропусти́л э́то ненамеренно.I missed it inadvertently.