The word "contouring" is a makeup technique that involves using darker and lighter shades to enhance or alter the shape of facial features. Antonyms for "contouring" would be words that describe the opposite effect, such as "natural" or "minimal." These words suggest a preference for a more subdued, simple look that does not require heavy makeup application or intense shading. Other potential antonyms for "contouring" might include "uniform," "flat," or "featureless," all words that imply a desire for a lack of contrast or differentiation between different areas of the face.