ad·her·ent 
(ăd-hîrənt, -hĕr-)
(ăd-hîrənt, -hĕr-)n.
A supporter, as of a cause or individual: a vote that pleased adherents of education reform.
adj.
1. Sticking or holding fast.
2. Botany Joined but not united. Used of dissimilar parts or organs.
ad·herent·ly adv.