inadvertent- russian

• случа́йный

  accidental, by chance, unintentional, inadvertent

  random (person), chance (acquaintance), stray

  occasional, casual (work), odd (job)

  random

• неумы́шленный

  unpremeditated, inadvertent- unintentional

• неча́янный

  unintentional, inadvertent (adj)

• да́вленый

  crushed, spoiled by inadvertent pressing