"Bare-boned" means minimal or basic, but there are several other similar words to describe this type of situation. Words like stripped-down, unadorned, spare, and austere all convey the idea of something being limited, plain, and simple. Basic, essential, fundamental, and elemental all point to the foundational elements of a thing or situation. Words like skeletal, stark, and minimalistic suggest a sense of spareness and raw simplicity. On the other end of the spectrum, words like lavish, opulent, and extravagant all suggest abundance, luxury, and excess. But when it comes to describing a situation or thing that is basic and limited, "bare-bones" is the perfect term.