irremeable

adj

1. (obsolete)Admitting no return, from which one cannot return.

   “an irremeable way”

   “Oh , thou hast given me such a glimpse of hell , So pushed me forward even to the brink Of that irremeable burning gulf”

   “th' irremeable flood”

   “But when I do come, I perhaps shall not be easily persuaded to pass again to the other side of Styx, to venture myself on the irreamable road”