The phrase "paragon of corruption" refers to someone who is considered the epitome or model of unethical behavior. There are many synonyms for this term, including "archetype of depravity," "champion of immorality," "embodiment of vice," "personification of deceit," "exemplar of dishonesty," and "icon of malfeasance." Other possible synonyms include "model of wickedness," "standard-bearer of graft," "poster child for bribery," and "quintessential crook." Each of these terms highlights different aspects of the individual's unethical behavior, but all convey a sense of someone who is the worst possible example of corruption and immorality.