Antonyms of noun plaintiff

1 sense of plaintiff

Sense 1
plaintiff, complainant -- (a person who brings an action in a court of law)
       Antonym of defendant (Sense 1)
      => defendant, suspect -- (a person or institution against whom an action is brought in a court of law; the person being sued or accused)

Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun plaintiff

1 sense of plaintiff

Sense 1
plaintiff, complainant -- (a person who brings an action in a court of law)
       => litigant, litigator -- ((law) a party to a lawsuit; someone involved in litigation; "plaintiffs and defendants are both litigants")