unforgoable

English

Etymology

From un- +‎ forgoable.

Adjective

unforgoable

1. That cannot be forgone.

   Synonym: indispensable

   Antonyms: forgoable, dispensable

   • 2013, William Brinkley, The Last Ship: A Novel‎^[1], →ISBN, page 145:

     We simply worked, calm in the entire I believe, knowing the unforgoable necessity for the orderly, for concord, for the exclusion of the extraneous, links as we were in a fastidious procedure, impervious to interruption, into which we, the ship and her company, were now inescapably locked [...]