"Won bass" is a fishing term commonly used in angling contests to refer to a bass that has been caught and won a particular competition or tournament. While there is no direct synonym for "won bass", it could be described as a victorious largemouth or smallmouth bass. Other similar terms in fishing jargon might include a triumphant bass, a champion bass, or a prize-winning bass. These synonyms can effectively convey the concept of a bass that has been successfully caught and emerged as the victor in a fishing competition, showcasing its size, beauty, and the angler's skill.