deceitful
de-ceit-ful
adjective
Intentionally misleading or dishonest to gain an advantage or hide the truth.
"His deceitful behaviour led to his dismissal."
Thesaurus
Synonyms: two-faced, double-dealing, double-tongued, Janus-faced, double-faced, ambidextrous, dishonest, duplicitous, dishonorable, fraudulent, fallacious