The term "dominant interest" refers to something which holds supreme or primary importance. Synonyms for this term include leading, principal, primary, primary concern, primary interest, preeminent, predominant, supreme, and major concern. These synonyms emphasize the central role that a certain interest plays in a particular situation. For example, in a company, the dominant interest would be the organization's profitability, while in a friendship, it may be the level of emotional support provided. By using these synonyms, we can better communicate and be specific about what we consider the most crucial aspect of a particular situation or relationship.