The term "heeder" refers to someone who follows or obeys another person's instructions. A few of the synonyms that can be used in place of "heeder" include follower, conformist, adherent, disciple, loyalist, and devotee. These words all emphasize the idea of allegiance or loyalty to a particular person, ideology, or cause. Additionally, terms like "compliant," "obedient," and "submissive" can be used to describe a "heeder's" behavior. These words suggest that an individual is willing to do whatever is asked of them without question or hesitation. Overall, there are many different words that can be used as synonyms for "heeder," each conveying slightly different nuances that relate to the idea of following and obeying.