unslakable

English

Etymology

From un- +‎ slakable.

Adjective

unslakable (not comparable)

1. That cannot be slaked.
   • 2017, Dean Koontz, The Silent Corner, page 397:

     And what a bonus it is that Inga, in addition to her unslakable thirst for ever more wealth and ever more power, is so exquisitely and entirely hot.