"Li ed down and roll over" is a phrase often used in dog training, but there are several synonyms that can be used interchangeably with this command. "Drop and roll" is another phrase that can be used to replace "lied down and roll over." "Play dead" or "feign death" can also be used to teach a dog to lie down and roll over onto their back. Another synonym is "belly up" or "show your belly." These phrases all indicate the same action of the dog lying down and rolling over onto their back. It's important to use consistent training language with dogs to aid in their understanding of commands.