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True believer

noun

Noun

1
A strict follower of a doctrine.
"When he had repoſed four years and four months in the boſom of care, rocked in the cradle of proſperity, he was brought forth, according to the cuſtom of true believers, and committed to the charge of moralifts of high fame, poliſhers of noble manners, and ſearchers of true knowledge, that they might cultivate his heaven-born genius, and teach him with dignity to rule that world which he was born to command[.]"
2
One who believes dogmatically in something regardless of evidence or even conclusive proof that the thing is false or was staged; one who has true-believer syndrome.
3
Used other than figuratively or idiomatically: see true, believer.

Unscramble this word: truebeliever