a person who follows or upholds a leader, cause, etc.; supporter; follower.

What is an adherent person?

: a person who is loyal to a leader, group, or religion : a person who adheres to or supports a system or set of principles. See the full definition for adherent in the English Language Learners Dictionary. adherent. noun. ad·​her·​ent | \ ad-ˈhir-ənt \

What is an example of adherent?

Adherent is defined as a person who follows something or someone, like an cause or a strong leader. An example of adherent is a military officer who follows a code of conduct. ... An example of someone who is adherent is a person who does what he promised to do in a contract he signed.