The phrase "Whited Sepulchre" refers to a person or thing that appears attractive and promising from the outside, but is actually deceptive or corrupt underneath. Synonyms for this term include "hypocrite," "deceiver," "imitation," "phony," "fraudulent," "disingenuous," and "fake." These words are often used to describe individuals who pretend to be kind or moral, but who in reality have ulterior motives. Similar phrases to "Whited Sepulchre" include "wolf in sheep's clothing," "false front," and "mask of deception." Words like these serve as important reminders to stay vigilant and not be deceived by appearances alone.