Making something look or seem less appetizing; removing appeal from food or removing the desire to eat.
Prefix 'de-' (meaning to remove) combined with 'appetizing' (from Latin 'appetere' meaning to desire/crave, via French 'appétit'). The '-ing' form suggests an ongoing action.
Food photographers and styling experts use deappetizing tricks in reverse—they've learned that certain angles, lighting, and colors make food less appealing, which restaurants carefully avoid and diet programs might use.
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