Definition from macmillandictionary.com
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Her injuries were only superficial.
The house suffered superficial damage from the flood.
The study is too superficial for us to reach any conclusion.
I have only a superficial knowledge of the subject.
She made a quick and superficial examination of the car.
Sarah is so superficial – she only cares about how she looks.
He writes about living in a greedy and superficial society.
We talked about superficial topics like sport and the weather.
These are superficial policy changes that help no one.
Any similarities between the countries are merely superficial.
The monkeys bear a superficial resemblance but are in fact quite distinct.