indissoluble

Adjective

1. (of a substance) incapable of being dissolved
   • Synonyms
     • insoluble
   • Antonyms
     • soluble
   • Similar to
     • water-insoluble
     • non-water-soluble
   • Related
     • insolubility
2. used of decisions and contracts
   • Similar to
     • permanent
     • lasting