Unadorned (adjective)

Not decorated or embellished; plain or simple.

Origin:

From the word adorn meaning "to decorate" and the prefix un- meaning "not".

Examples:

1. The room was unadorned, with only a simple table and two chairs.
2. The bride wore an unadorned white dress.
3. The unadorned truth is that we cannot afford it.
4. The unadorned design of the building made it stand out from the others.
5. The unadorned cake was still delicious.