insincere vs meretricious

insincere and meretricious both are adjectives.

Word	Noun	Adjective	Verb	Adverb
insincere	No	Yes	No	No
meretricious	No	Yes	No	No

insincere (adjective)	meretricious (adjective)
lacking sincerity	like or relating to a prostitute
	based on pretense; deceptively pleasing
	tastelessly showy