disingenuous
dis-in-gen-u-ous / dĭs-ĭn-jĕn-yo͞o-əs
adjective 1. having secret motives; insincere; not forthright Mr. Elliot is evidently a disingenuous, artificial, worldly man, who has never had any better principle to guide him than selfishness. From “Persuasion” by Jane Austen, 1775 – 1817