English version

be a (great/firm) believer in something

From Longman Dictionary of Contemporary Englishbe a (great/firm) believer in somethingbe a (great/firm) believer in somethingAPPROVEto believe strongly that something is good and effective I’m a great believer in regular exercise. believer
Examples from the Corpus
be a (great/firm) believer in somethingDaley was a firm believer in the bootstrap theory.He was a firm believer in the power of prayer.He was a great believer in expressing aggression, not bottling it up.Lampard was a great believer in eating whenever you could.Letterman is a believer in the immigrant mentality.Molly was a believer in homeopathy and underwent her last operation and subsequent treatment in the Royal London Homeopathic Hospital.She is a believer in fundamentals, in technique.Tip is a firm believer in fate, and in 1961 the finger pointed in the right direction for him.
Pictures of the day
Do you know what each of these is called?
Click on the pictures to check.