| Main Entry: | |
| Part of Speech: | adjective |
| Definition: | permanent |
| Synonyms: | binding, enduring, firm, imperishable, lasting |
| Antonyms: | dissoluble |
| Main Entry: | binding |
| Part of Speech: | adjective |
| Definition: | necessary |
| Synonyms: | bounden, compulsory, conclusive, counted upon, essential, imperative, incumbent on, indissoluble, irrevocable, mandatory, obligatory, required, requisite, unalterable |
| Main Entry: | immortal |
| Part of Speech: | adjective |
| Definition: | death-defying, imperishable |
| Synonyms: | abiding, amaranthine, ceaseless, constant, deathless, endless, enduring, eternal, evergreen, everlasting, incorruptible, indestructible, indissoluble, interminable, lasting, never-ceasing, never-ending, perdurable, perennial, permanent, perpetual, phoenixlike, sempiternal, timeless, undying, unfading |
| Notes: | immortal means not subject to death, while immoral means violating principles of right and wrong or not adhering to ethical or moral principles |
| Antonyms: | destructible, ephemeral, human, mortal, perishable |
| Main Entry: | indestructible |
| Part of Speech: | adjective |
| Definition: | lasting, unable to be destroyed |
| Synonyms: | abiding, deathless, durable, enduring, everlasting, immortal, immutable, imperishable, incorruptible, indelible, indissoluble, inexterminable, inextinguishable, inextirpable, irrefragable, irrefrangible, nonperishable, permanent, perpetual, unalterable, unbreakable, unchangeable, undestroyable, undying, unfading |
| Antonyms: | breakable, destructible, perishable |
| Main Entry: | inseparable |
| Part of Speech: | adjective |
| Definition: | unable to be divided |
| Synonyms: | as one, attached, conjoined, connected, entwined, inalienable, indissoluble, indivisible, inseverable, integral, integrated, intertwined, interwoven, molded, secure, tied up, unified, united, whole |
| Antonyms: | dividable, separable |
| Main Entry: | lasting |
| Part of Speech: | adjective |
| Definition: | enduring, unending |
| Synonyms: | abiding, constant, continual, continuing, deep-rooted, durable, endless, eternal, everlasting, forever, in for the long haul, incessant, indelible, indissoluble, inexhaustible, inexpungible, lifelong, long-term, longstanding, old, perdurable, perennial, permanent, perpetual, persisting, stable, till the cows come home, unceasing, undying, unremitting |
| Antonyms: | ceasing, ending, ephemeral, fleeting, passing, short-lived, temporary, transient |