Word: oleaginous
Phonetic:
/ˌəʊ.lɪˈædʒ.ɪ.nəs/
Listen:
Oily, greasy.
(of manner or speech) Falsely or affectedly earnest; persuasively suave. Example: The oleaginous salesman convinced me to buy a more expensive car.
You can find a list of possible crossword clues for OLEAGINOUS below.