Synonyms of the word

indissoluble

• adj. Lasting; indestructible; not possible to dissolve, disintegrate or break-up.

insoluble

• adj. That cannot be dissolved.
• adj. That cannot be solved; unsolvable; insolvable.
• adj. That cannot be explained; mysterious or inexplicable.
• adj. That cannot be broken down; dispersed.
• n. Any substance that cannot be dissolved.

lasting

• adj. Persisting for an extended period of time.
• v. present participle of last.
• n. continuance; endurance.
• n. A durable woollen material formerly used for women's shoes; everlasting.
• n. The act or process of shaping on a last.

permanent

• adj. Without end, eternal.
• adj. Lasting for an indefinitely long time.
• n. A chemical hair treatment imparting or removing curliness, whose effects typically last for a period of…
• v. (transitive, dated) To perm (the hair).