having a roughly broken, rocky, hilly, or jagged surface

rugged ground.

(of a face) wrinkled or furrowed, as by experience or the endurance of hardship.

roughly irregular, heavy, or hard in outline or form; craggy

Lincoln's rugged features.

rough, harsh, or stern, as persons or nature.

full of hardship and trouble; severe; hard; trying

a rugged life.

tempestuous; stormy

rugged weather.

harsh to the ear

rugged sounds.

rude, uncultivated, or unrefined.

homely or plain

rugged fare.

capable of enduring hardship, wear, etc.; strong and tough

rugged floor covering; a rugged lumberjack.