logical
US /ˈlɑː.dʒɪ.kəl/
UK /ˈlɑː.dʒɪ.kəl/

1.
of or according to the rules of logic or formal argument
:
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His argument was perfectly logical.
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It's a logical conclusion based on the evidence.
2.
able to reason sensibly
:
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She's a very logical person, always thinking things through.
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He tried to be logical in his approach to the problem.