insatiable

 
Pronunciation: /ɪnˈseɪʃəb(ə)l/

adjective

  • (of an appetite or desire) impossible to satisfy: an insatiable hunger for success
  • (of a person) having an insatiable appetite or desire for something, especially sex: ‘You’re insatiable!’ she cried as she pushed him away so insatiable a gourmand as myself

Derivatives

insatiability

Pronunciation: /-ˈbɪlɪti/
noun

insatiably

adverb

Origin:

late Middle English: from Old French insaciable or Latin insatiabilis, from in- 'not' + satiare 'fill, satisfy' (see satiate)