| boundless(adjective, slow, boring, constant, tedious) |
| endless(adjective, constant, abundant, unrestrained, immense) |
| endlessly(adjective, adverb, vast, permanent, continuously) |
| eternal(adjective, pause, constant, absolute, abundant) |
| far-flung(adjective, widespread) |
| interminable(adjective, slow, constant, late, monotonous) |
| long(adjective, slow, boring, distant, remote) |
| perpetual(adjective, present, constant, absolute, abundant) |
| timeless(adjective, vast, lasting, permanent, everlasting) |
| unending(adjective, slow, boring, constant, tedious) |
| ad infinitum(adjective, adverb, infinity) |
| ageless(adjective, lasting, permanent, everlasting, unending) |
| ceaseless(adjective, constant, abundant, unrestrained, immense) |
| constant(adjective, abundant, unrestrained, endless, immense) |
| continual(adjective, constant, abundant, unrestrained, infinite) |
| continually |
| continuous(adjective, constant, abundant, unrestrained, infinite) |
| countless(adjective, constant, abundant, unrestrained, infinite) |
| dateless(adjective, lasting, permanent, everlasting, unending) |
| everlasting(adjective, constant, absolute, abundant, unrestrained) |