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reason

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verb British English pronunciation: reason /ˈriːz(ə)n/ 
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present tense
I/you/we/theyreason
he/she/itreasons
present participlereasoning
past tensereasoned
past participlereasoned
  1. 1
    [transitive] formal to make a particular judgment after you have thought about the facts of a situation in an intelligent and sensible way
    reason (that):

    We reasoned that they would not dare leave before dark.

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