termless

adj

1. Not terminating; having no end, limit, or boundary

   “termless joys”

   “In a few hours I shall be one of a nameless horde plodding the snowy solitudes of Russia, under the lash, and bound for that land of mystery and misery and termless oblivion, Siberia!”

2. inexpressible; indescribable

   “termless skin”