faitheist adjective 1noun 1forms 3 adjective1 •Of or pertaining to faitheism. noun1 •(slang) An atheist who thinks faith should not be criticized.I see the "faitheists" as parallels to the quietly closeted gays who cringed at the tactics of Act Up or the sit-in counter veterans who shook their heads at Malcolm X. — 2009 formsfaitheists · more faitheist · most faitheist