Dirty tricks can refer to a variety of unethical tactics used to achieve a goal. Some synonyms for this phrase include underhanded tactics, deceitful maneuvers, Machiavellian strategies, shady ploys, tricky schemes, and unethical gambits. These words all imply the use of dishonest or unethical means to achieve an outcome. Other synonyms include crooked schemes, sneaky maneuvers, devious strategies, sly tricks, and crafty techniques. All of these words share a negative connotation and suggest the use of trickery for personal gain or advantage. However, it is important to note that these tactics are not always successful and can often backfire, leading to negative consequences.