Undertrial is a term commonly used in the Indian Legal System to refer to a person who has been arrested, but their case is still ongoing and they have not been convicted or acquitted. There are several synonyms for this particular term, including accused, defendant, prisoner, detainee, suspect, inmate, and arrestee. Each of these words refers to a person who is in the process of being tried in court, but has not yet been found guilty or innocent. These synonyms may be used interchangeably in legal contexts, but it is important to understand the precise meaning of each term in order to communicate accurately and effectively.