Crude oil.
Any substance in its natural state.
In a natural, untreated state.
Characterized by simplicity, especially something not carefully or expertly made.
Lacking tact or taste.
Lacking concealing elements.
Pertaining to the uninflected stem of a word.
A flammable liquid ranging in color from clear to very dark brown and black, consisting mainly of hydrocarbons, occurring naturally in deposits under the Earth's surface.