IPA: /ˈlʌstfəl.nəs/
KK: /ˈlʌstfəl/
The quality or state of having strong sexual desire or craving.
His lustfulness often led him to make poor decisions in relationships.
Lustfulness → It is formed from "lust" (from Old English *lust*, meaning desire or pleasure) and "-fulness" (meaning the state of being full of). The word "lustfulness" refers to the state of being full of desire or pleasure, particularly in a sensual context.
Think of 'lust' as a strong 'desire' and '-fulness' meaning 'full of' — so lustfulness means being full of desire.