The act or process of judging; the formation of an opinion after consideration or deliberation. The mental ability to perceive and distinguish relationships; discernment: Fatigue may affect a pilot's judgment of distances. The capacity to form an opinion by distinguishing and evaluating: His judgment of fine music is impeccable. The capacity to assess situations or circumstances and draw sound conclusions; good sense: She showed good judgment in saving her money. See Synonyms at reason. An opinion or estimate formed after consideration or deliberation, especially a formal or authoritative decision: awaited the judgment of the umpire. Law A determination of a court of law; a judicial decision. Law A court act creating or affirming an obligation, such as a debt. Law A writ in witness of such an act. An assertion of something believed. A misfortune believed to be sent by God as punishment for sin. The Last Judgment.