Lawsuit/ˈlɔːsuːt/ Definition 1 of 2Pro Tip 1/3Legal Context Used specifically for disputes in a formal legal setting, not casual disagreements. They settled the lawsuit out of court. Pro Tip 2/3Initiating Action 'Filing a lawsuit' means starting the legal case; it's the first formal step. He decided to file a lawsuit after the negotiations failed. Pro Tip 3/3Court Decision A lawsuit is resolved by a court's decision, often with a judge or jury. The judge dismissed the lawsuit due to lack of evidence.