crude

a dark oil consisting mainly of hydrocarbons

not carefully or expertly made

“managed to make a crude splint”

devoid of any qualifications or disguise or adornment

“the crude facts”

not refined or processed

“crude oil”

conspicuously and tastelessly indecent

“a crude joke”

belonging to an early stage of technical development; characterized by simplicity and (often) crudeness

“the crude weapons and rude agricultural implements of early man”

not processed or subjected to analysis

“only the crude vital statistics”