ignorant, unlearned
unbelieving
An ignorant person.
One who holds that only material phenomena can be known and knowledge of spiritual matters (the unmeasurable) or ultimate causes is impossible.
Unpolished, rough and ready, uncultured, unsophisticated.
Woven from a coarsely spun yarn, (usually also from a coarse material).
A garment made from roughly spun yarn or made from a coarse material.