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has been reasoning

  • present perfect progressive
    of reason (3rd person singular).
    reason
    noun
    a basis or cause, as for some belief, action, fact, event, etc..

Example Sentences

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See Examples For:

For 40 years he has been reasoning, calculating and arguing that the earth has a definite electrical resonance.

From Time Magazine Archive

In this fatal mistake, we discover the error which has vitiated all premises from which he has been reasoning.

From Solaris Farm A Story of the Twentieth Century by Milan C. Edson