Indissoluble /(?)/

In·dis·so·lu·ble

Indissoluble

a.
  1. Not dissoluble; not capable of being dissolved, melted, or liquefied; insoluble; as, few substances are indissoluble by heat, but many are indissoluble in water.
  2. Incapable of being rightfully broken or dissolved; perpetually binding or obligatory; firm; stable, as, an indissoluble league or covenant.
    To the which my duties Are with a most indissoluble tie Forever knit.