The word "conspired" means to plan secretly with others to do something illegal or harmful. There are several synonyms for this word, including colluded, schemed, plotted, machinated, connived, and consorted. Colluded refers to a secret agreement between two or more parties for an illegal purpose. Schemed means to make a plan to accomplish something, often in a dishonest way. Machinated means to devise a cunning or crafty plot. Connived means to secretly and deceptively cooperate with someone in wrongdoing. Finally, consorted means to associate or join with others in a secret conspiracy. All of these words can be used interchangeably with "conspired".