| extensive(adjective, distant, remote, widespread, sweeping) |
| far-reaching(adjective, distant, remote, extensive, widespread) |
| forever(adjective, adverb, endless, indefinite, lasting) |
| immeasurable(adjective, constant, absolute, abundant, unrestrained) |
| immemorial(adjective, vast, lasting, permanent, everlasting) |
| immense(absolute, vast, endless, unlimited, incalculable) |
| incalculable(adjective, constant, absolute, abundant, unrestrained) |
| incessant(adjective, constant, absolute, abundant, infinite) |
| incessantly(adverb, endlessly, forever, constantly, repeatedly) |
| indestructible(adjective, lasting, permanent, everlasting, unending) |
| inexhaustible(absolute, endless, immense, unlimited, limitless) |
| infinite(adjective, constant, abundant, unrestrained, endless) |
| interminably(adverb, endlessly, continuously, forever, constantly) |
| lengthy(adjective, slow, boring, tedious, late) |
| limitless(adjective, slow, boring, constant, tedious) |
| never-ending(adjective, adverb, constant, infinite, unfathomable) |
| numberless(adjective, constant, absolute, abundant, infinite) |
| perdurable(adjective, absolute, continuous, endless, lasting) |
| permanent(adjective, continuous, vast, lasting, everlasting) |
| perpetually(adverb, continuously, forever) |