misjoinder in English dictionary misjoinder Meanings and definitions of "misjoinder" (law) An incorrect union of parties or of causes of action in a procedure in criminal or civil court. noun (law) An incorrect union of parties or of causes of action in a procedure in criminal or civil court. more Grammar and declension of misjoinder misjoinder ( plural misjoinders) misjoinder (plural misjoinders) more Sample sentences with "misjoinder" Declension Stem Try again Available translations French Irish Persian Russian Spanish Tamil Authors