Frugal (adjective)

1. Careful and economical with money or resources.
2. Simple and plain in style; avoiding waste or excess.

Origin:

Late middle english: from latin frugalis, from frugi "economical", from frux, frug- "fruit".

Examples:

1. She was frugal with her money.
2. He was a frugal shopper, always looking for the best deals.
3. The frugal diet was based on simple, whole foods.
4. The frugal lifestyle was a conscious choice.
5. The frugal design used minimal materials and avoided excess.