The phrase "most cadent" refers to something that is falling or descending in a rhythmic or musical pattern. Synonyms for this phrase include "rhythmic," "melodic," "musical," "flowing," "harmonious," "soothing," "pleasing," "lyrical," "modulated," "cadenced," and "swaying." These words all capture the same sense of movement and musicality that is inherent in the phrase "most cadent." Depending on the context, one might choose a specific synonym to emphasize a particular aspect of the rhythm or melody, such as the soothing quality of a lullaby or the joyousness of a lively dance tune.