disqualified person
Refers to someone who has been disqualified from a competition, exam, or similar context due to rule violation or failure to meet requirements.
He became a disqualified person due to a doping violation.
Disqualified persons cannot advance to the next round.
Compound of 失格 (disqualification) + 者 (person). The exact historical derivation is uncertain, but the meaning is transparent from its components.