"Tartuffish" is a term that refers to someone who is hypocritical or insincere in their behavior or attitudes. Other synonyms for this word include "pretentious," "deceitful," "two-faced," "sham," "phony," "false," "hypocritical," "disingenuous," "insincere," and "fraudulent." Each of these synonyms has a slightly different connotation, but they all refer to someone who is not honest or genuine in their actions or words. It is important to be aware of these synonyms in order to accurately describe someone's behavior and attitudes, and to avoid falling into the trap of being "Tartuffish" ourselves.