phony
faux
phony
phony
phony, false
bogus or phony
False is a five letter word meaning fake.
The word that means something fake or false is "counterfeit."
F is also the first letter of the synonym "faux" (meaning false or imitation). M is the first letter of the word "mock" (same connotation as faux).
artificial
sham, charlatan, phoney
False and phony are five letter words that mean ingenuous or fake.
Phony