"votary" in the noun sense
one bound by vows to a religion or life of worship or service
"monasteries of votaries"
a priest or priestess (or consecrated worshipper) in a non-Christian religion or cult
"a votary of Aphrodite"
a devoted (almost religiously so) adherent of a cause or person or activity
"the cultured votary of science"
Source: WordNet® (An amazing lexical database of English)
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