plural of make believe

plural of non-believer

Be assured; be certain. / Used other than figuratively or idiomatically: see believe, me.

plural of Old Believer

(religion) Any of those who separated from the official Russian Orthodox Church after 1666 as a protest against church reforms introduced by Patriarch Nikon between 1652 and 1666. They continue liturgical practices which predate the reforms.

plural of true believer

someone who shares one's faith; a brother in faith

(rare) Someone who hides their belief.

plural of crypto-believer

(childish) The quality or act of pretending; acting as if something is true when in fact one knows it is not.