Bare-bones (adjective)

1. Having only the minimum necessary features or resources.
2. Stripped down or basic.

Origin:

Mid 19th century: from the phrase 'bare bones', originally denoting the unclothed framework of a body, later extended to denote a basic or essential structure.

Examples:

1. The company is operating on a bare-bones budget this year.
2. The new model of the car is a bare-bones version, with few extra features.
3. The band played a bare-bones acoustic set, relying only on their voices and instruments.
4. The government is providing only bare-bone services to its citizens in this economic crisis.
5. The bare-bone interiors of the minimalist apartment only included a bed and a table.