Spartan means very simple and without anything extra.
Spartan can make people think of being tough, strong, and not needing much.
Examples:
The room was spartan, with just a bed and a chair.
She lived a spartan life, with only the things she needed.
The spartan meal had only bread and water.
His spartan backpack had only a sandwich and a water bottle.
The spartan house had no TV, no toys, and no candy.
The spartan soldier had only a shield and a sword.