One other than the principals involved in a transaction:
The woman in an adulterous relationship with a married man
An additional person or thing:
the codefendant charged with adultery with the estranged spouse in a divorce proceeding
Find another word for corespondent. In this page you can discover 11 synonyms, antonyms, idiomatic expressions, and related words for corespondent, like: third party, second man, second woman, other man, other-woman, one corner of the triangle, joint respondent, joint defendant, defendant, other and co-respondent.