(especially of a desire or need) too great to be satisfied. (Cambridge Dictionary)
Incapable of being satisfied: Quenchless (Merriam – Webster)
(of an appetite or desire) impossible to satisfy. (Oxford Dictionaries)
Sexual Distancers – 3 Ways to Satisfy the Insatiable Spouse.
More than 100,000 people have signed a petition asking Netflix to scrap ‘toxic’ show ‘Insatiable’.