- indissoluble
- adjundissolvable, indissolvable, insoluble, infusible; indivisible, irreducible, indiscerpt-ible; indestructible, imperishable, undying, deathless, inextinguishable, infrangible, unbreakable, irrefrangible; indelible, ineradicable; immutable, unalterable, incommutable, changeless, unchangeable; unfading, incorruptible, undecaying, amaranthine, perennial, (of leaves) Bot. indeciduous, (of trees) evergreen.2. firm, fixed, fast, constant, solid, stable, durable, permanent; unwavering, unfaltering, steadfast, steady; abiding, enduring, lasting.3. binding, obligatory, irrevocable, imperative, mandatory, compulsory, requisite, Law. peremptory.
A Note on the Style of the synonym finder. 2014.