"A bone to pick" is a common idiom used to describe a situation where someone has a problem or issue with another person that they want to discuss and resolve. However, there are several synonyms for this phrase that also convey the same meaning. For instance, "a matter to settle," "an issue to address," "a grievance to air," "a problem to resolve," and "a dispute to discuss," are some of the alternatives that can be used. These phrases all imply that a person wishes to address and resolve a conflict or problem with someone else, making it easier for them to communicate their intentions without using the same cliché phrase.