1. in a way that deals only with the surface or obvious aspects; not thoroughly or deeply
2. on or affecting only the surface; externally

Examples

• She only superficially understood the complex theory.
• The report superficially covered the main issues without going into detail.
• The wound was superficially treated at the scene.
• He superficially resembled his brother but had a different personality.
• The students superficially reviewed the material before the exam.
• The damage to the car was only superficial, affecting just the paint.