hard-liner

or hard·lin·er

[ hahrd-lahy-ner ]
/ ˈhɑrdˈlaɪ nər /

noun

a person who adheres rigidly to a dogma, theory, or plan.

Origin of hard-liner

First recorded in 1960–65; hard-line + -er1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

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