IPA: /ɪnˈseɪʃənɪs/
KK: /ɪnˈseɪʃənɪs/
The condition of having an unquenchable desire or appetite that cannot be satisfied.
Her insatiateness for knowledge drove her to read every book she could find.
Insatiateness → It is formed from "in-" (meaning not) and "satiare" (meaning to satisfy) combined with the suffix "-ness" (indicating a state or quality). The word describes the state of being not satisfied or having an unquenchable desire.
Think of 'not satisfied' ('in-') and 'to satisfy' ('satiare') to remember that insatiateness means a state of never being satisfied.