胜算 (shèng suàn) is a noun meaning the probability or likelihood of succeeding, especially in competitive contexts like games, plans, or military campaigns. It often appears in phrases like 有胜算 (have a good chance of winning) or 没有胜算 (no chance of success). The word combines 胜 (victory) and 算 (calculation), literally 'a calculation for victory'. It is not a verb — you cannot say 胜算某事; instead use 有胜算 (have a chance) or 胜算大 (the chance is high).