indissoluble

Permanent; binding.

Impossible to dissolve, disintegrate, or decompose.

Not dissoluble or dissolvable; incapable of being dissolved. See dissolve, 1, and solution.

Not dissoluble in force or obligation; not to be rightfully broken or violated; perpetually binding or obligatory; firm; stable: as, an indissoluble covenant.

Not dissoluble; not capable of being dissolved, melted, or liquefied; insoluble.

Incapable of being rightfully broken or dissolved; perpetually binding or obligatory; firm; stable, .

Lasting, indestructible.

Not possible to dissolve, disintegrate or break-up.

(of a substance) incapable of being dissolved

used of decisions and contracts