| a. | 1. | Having the nature or qualities of oil; oily; unctuous. |
| Adj. | 1. | oleaginous - unpleasantly and excessively suave or ingratiating in manner or speech; "buttery praise"; "gave him a fulsome introduction"; "an oily sycophantic press agent"; "oleaginous hypocrisy"; "smarmy self-importance"; "the unctuous Uriah Heep" |
| 2. | oleaginous - containing an unusual amount of grease or oil; "greasy hamburgers"; "oily fried potatoes"; "oleaginous seeds" |