The phrase "fret against" is often used to express restlessness or discontent with a particular situation or circumstance. Some synonyms for this phrase include "chafe," "grumble," "complain," "protest," "bemoan," "oppose," and "object." Each of these terms carries a slightly different connotation, but all convey a sense of dissatisfaction or agitation. For example, "chafe" implies a rubbing or irritation, while "protest" suggests more active resistance. Regardless of the specific synonym used, the underlying sentiment of dissatisfaction remains the same. When we "fret against" something, we are expressing a desire for change or improvement, and communicating that we are not satisfied with the current state of affairs.