the.com/adherent

A believer with a membership card nobody printed but everybody checks.

means A person who supports or follows a particular person, party, cause, or doctrine — someone sticking with a belief rather than just passing through it.

from From Latin 'adhaerere' — 'ad-' (to) plus 'haerere' (to stick or cling). The same root gives us 'adhesive.' An adherent is, literally, someone who has stuck to something: a creed, a leader, a cause — glued by conviction rather than contract.

origin
from Latin adhaerere, to stick to
glue vs loyalty
same root once meant literal sticking
not synonym
stronger commitment than mere fan or follower
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