tautological

US /ˌtɑː.t̬əˈlɑː.dʒɪ.kəl/
UK /ˌtɑː.t̬əˈlɑː.dʒɪ.kəl/
1.

lặp lại

using two words or phrases that express the same meaning, in a way that is unnecessary and usually unintentional:

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The phrase "advance planning" is tautological since when else are you going to plan something?
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tautology