1. Having a rough irregular surface: rugged terrain.

2. Having strong features marked with furrows or wrinkles: the rugged face of the old sailor.

3. Having a sturdy build or strong constitution: a rugged trapper who spent months in the wilderness.

4. Tempestuous; stormy: the rugged weather of the North Atlantic.

5. Demanding great effort, ability, or endurance: the rugged conditions of barracks life.

6. Lacking culture or polish; coarse and rude: rugged manners and ribald wit.