The antonyms for the phrase "low-down and dirty" would be words that describe actions and behavior that are admirable and high-minded. These may include words such as ethical, moral, fair, just, cordial, kind, decent, respectable, and honest. These antonyms signify the opposite of "low-down and dirty," which can often refer to actions that are deceitful, disreputable, or unethical. When it comes to business dealings or personal relationships, being ethical, honest, and fair can carry much more weight than resorting to underhanded tactics. Embracing these values can lead to success, fulfillment, and positive outcomes in all areas of life.