constitutional
US /ˌkɑːn.stəˈtuː.ʃən.əl/
UK /ˌkɑːn.stəˈtuː.ʃən.əl/

1.
relating to an established set of principles governing a state or organization
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The new law is subject to constitutional review.
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The court ruled that the action was not constitutional.
2.
relating to the physical constitution of a person or thing; inherent
:
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His weakness was constitutional, not temporary.
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He has a constitutional aversion to hard work.