be a firm believer in (something)(redirected from been a firm believer in something)
be a firm believer in (something)
To have a strong conviction that something (stated after "in") is important or worthwhile. I'm a firm believer in resting on the weekends so that I don't get burned out.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
be a great/firm believer in somethingbelieve strongly that something is good, important or valuable: My mother was a great believer in horoscopes all her life. ♢ The boss was a firm believer in developing strong teamwork.
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