IPA: /ˈkʌv.ɪ.təs.li/
KK: /ˈkʌvɪtəsli/
In a way that shows a strong desire to possess something that belongs to someone else.
He looked at the new car covetously, wishing it were his.
Covetously → It is formed from "covet" (from Old French *coveitier*, meaning to desire eagerly) and the suffix "-ously" (meaning in a manner of). The word "covetously" describes the manner of desiring something eagerly, often with an implication of greed or envy.
Think of someone desiring something eagerly — that's what 'covetously' means, as it describes a manner of strong desire.