Pointless, foolish, lacking intellectual content or value.
Lacking brightness or clearness, as a colour.
Extremely stupid.
To make stupid.
To represent as stupid.
To reduce the intellectual demands of.
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.