upholder

plural upholders

1. Someone who upholds something.

   an upholder of ethical principles

   1 more example

   Libraries have been burnt and whole religious movements wiped out because their belief and myths have been considered to be of dubious origin by the upholders of orthodoxy[.]

   1981, William Irwin Thompson, The Time Falling Bodies Take to Light:Mythology, Sexuality and the Origins of Culture, page 12

2. obsoleteA dealer in secondhand furniture and clothes; an upholdster.