1. Not separable; incapable of being separated or disjoined.
The history of every language is inseparable from that of the people by whom it is spoken. --Mure.
Liberty and union, now and forever, one and inseparable. --D. Webster.
2. Gram. Invariably attached to some word, stem, or root; as, the inseparable particle un-.
adj : not capable of being separated; "inseparable pieces of rock"