Adherent/ədˈhɪrənt/ Definition 1 of 3Pro Tip 1/3Political Usage Used often in political or ideological contexts to describe committed supporters. He became an adherent of the green movement. Pro Tip 2/3Positive Connotation Implies a positive and active support, not just passive agreement. She's been a dedicated adherent of women's rights. Pro Tip 3/3Not Interchangeable Not a direct substitute for 'fan' or 'enthusiast' which are less formal and committed. As an adherent, he regularly contributes to the cause.