Most merriment is an expression that refers to the state of being extremely cheerful, happy, and festive. There are several synonyms that can be used to substitute this phrase and express the same meaning, including joyfulness, jocularity, joviality, gleefulness, exuberance, elation, high-spiritedness, and mirthfulness. Each of these synonyms carries its own connotations and nuances, but they all convey a sense of joyful exuberance and contagious merriment. Whether you are describing a lively party, a festive holiday celebration, or a simple moment of shared happiness, these synonyms can help you express the joy and merriment of the occasion in a variety of different ways.