hardliner(redirected from liner)
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Related to liner: One liner
Someone who has an unyielding, inflexible belief in some person or thing. Susan's not a hardliner, so I really think she'll listen to your views on the matter.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
n. a person who takes a strict position (on something). Tom is sort of a hardliner when it comes to spending public money.
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved.