PREVARICATOR

prevaricator (pri-var-<<schwa>>-kay-t<<schwa>>r), n. [Latin] 1. A liar; an equivocator. 2. Roman law. One who betrays another’s trust, such as an advocate who aids the opposing party by betraying the client. — Also spelled (in sense 2) praevaricator.

[Blacks Law 8th]