omättlig betyder på engelska

insatiable▼(not satiable; incapable of being satisfied or appeased)
adjective
[UK: ɪn.ˈseɪ.ʃəb.l̩] [US: ˌɪn.ˈseɪ.ʃəb.l̩]

voracious▼(devouring great quantities of food)
adjective
[UK: və.ˈreɪ.ʃəs] [US: vɒ.ˈreɪ.ʃəs]