ex-convict russian

• отсиде́вший

  having served time, ex-convict (adjectival), released from prison

• отсиде́вшийся

  having waited out, having sat out, having bided one's time, who has lain low

  having served a sentence, ex-convict (adj.)

• посиде́вший

  grey-haired, hoary

  who has served time, who has been imprisoned, ex-convict