Settling out of court is the best way to resolve disputes.
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讼 is a classical/literary character. In modern Chinese it appears in formal legal terms: 诉讼 (litigation), 辩讼 (to argue a case), 兴讼 (to initiate a lawsuit).
memory
讼 combines 言 (speech/words) with 公 (public) — a 'public speech' in a court of law.