IPA: /ˈlʌstfəl/
KK: /ˈlʌstfəl/
Feeling or showing a strong desire for sexual pleasure.
He had a lustful gaze that made her uncomfortable.
Lustful → It is formed from "lust" (from Old English *lust*, meaning desire or pleasure) and "-ful" (meaning full of). The word "lustful" means full of desire or pleasure, particularly in a sensual context.
Think of 'lust' as a strong desire, and remember that 'lustful' means being full of that desire.