Monogamy is the idea of being committed to one partner in marriage or a relationship. The word monogamously is an adverb used to describe the act of being faithful to a single partner. Some common synonyms for this word include exclusivity, loyalty, fidelity, and faithfulness. Other related words include devotion, commitment, constancy, and consistency. Phrases like staying true, being true-blue, being devotedly loyal, and steadfastly faithful also describe the concept of monogamy. Monogamously is often used to describe a healthy and committed relationship, and these synonyms express those same feelings of dedication and loyalty.