1 in a way that is rude and offensive:
To put it crudely, they were having a good snog.
She yelled at a passing driver who had crudely propositioned her.
2 in a simple and not skillful way:
Crudely painted signs threatened trespassers.
3 rudely and offensively:
He illustrated the book with his own crudely drawn cartoons.
Put crudely, government has become a lot less scary, and corporations have become a lot more so.
The images will be "erotically artistic, not crudely titillating".
He spoke so crudely, calling one contestant "not only ugly, but stupid".