One who denies or refuses; a person who practices denial or rejection more intensively.
From 'denier' with the additional suffix '-er', creating an augmentative form suggesting a more extreme or habitual denier, though this form is extremely rare in modern usage.
This word is so uncommon that most dictionaries don't list it—it exists grammatically but is virtually unused, a linguistic ghost created by adding '-er' to a word that already means 'one who denies.'
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