D defs.my
Entry 1 sense Webster, 1913

Insatiable

/ĭnˌ-sāsh'-əb-əl/ · In·sa·tia·ble · IPA /ɪnˈseɪʃ(j)əbəl/
01 a. Not satiable; incapable of being satisfied or appeased; very greedy; as, an insatiable appetite, thirst, or desire.
  1. 1.
    Not satiable; incapable of being satisfied or appeased; very greedy; as, an insatiable appetite, thirst, or desire.
    ““Insatiable of glory.”” Milton.