Lacking in refinement or civility; bad-mannered; discourteous. / Lacking refinement or skill; untaught; ignorant; raw. / Violent; abrupt; turbulent. / Somewhat obscene, pornographic, offensive.

Reddish in color, especially of the face, fire, or sky. / (Britain, Australia, slang, not comparable) A mild intensifier, expressing irritation.

(Britain, slang) A mild intensifier, expressing irritation.

(informal) A ruddy duck. / (informal) A ruddy ground dove.

(transitive) To make reddish in colour.

(nautical) An underwater vane used to steer a vessel. The rudder is controlled by means of a wheel, tiller or other apparatus (modern vessels can be controlled even with a joystick or an autopilot).

(often in the plural) A fundamental principle or skill, especially in a field of learning. / (often in the plural) A form that lacks full or complex development.

(transitive) To ground; to settle in first principles.

in a rude manner

Of or relating to one or more rudiments. / Basic; minimal; with less than, or only the minimum, necessary.