"Come to heel" is a phrase that means to obey or submit to someone. There are several synonyms that can be used to convey the same meaning. One such word is "comply," which means to follow rules or instructions. "Conform" is another synonym, which implies adhering to societal norms or expectations. "Submit" is another word that is often used interchangeably, emphasizing the act of surrendering to a higher authority or power. Other synonyms for "come to heel" include "yield," "obey," "accede," "capitulate," and "concede." These words all emphasize the importance of following orders or rules and submitting to authority.