noun
probationer; trainee on probation
Refers to a person serving a probationary period, especially in a professional or official capacity. Often used in contexts like government, law, or corporate training.
彼は裁判所で試補として働いている。
He works as a probationer at the court.
試補期間が終われば正式採用される。
After the probationary period ends, you will be formally hired.
Compound of 試 (trial, test) and 補 (supplement, assistant), literally meaning 'trial assistant'. The exact historical derivation is uncertain, but the term is conventionally associated with probationary roles.