The word "spar" has several synonyms that describe different aspects of the word. In terms of physical activity, "spar" can refer to practice fighting or boxing and synonyms for this include sparring, training, and practicing. When used in terms of verbal debate, "spar" can mean to argue or dispute and synonyms for this include debate, argue, dispute, and disagree. Additionally, in boating, "spar" refers to a pole used to support sails and synonyms for this include mast, yard, and boom. Understanding the context in which "spar" is being used can help determine which synonym is most appropriate to use.