spartan

adjective

1. Austere, frugal, characterized by self-denial.“I went on the retreat to the monastery, thinking I would be sleeping in a spartan cell, only to discover a simple but comfortable bedroom.”
2. Resolute in the face of danger or adversity.“The spartan legionaries vowed to fight to the death.”
3. Lacking in decoration and luxury.“After ten years as a fashion designer in the rough-and-tumble Garment District, Eloise left New York for the spartan but serene life of a farmer's wife.”