affirmatory

adjective
af·​fir·​ma·​to·​ry | \ ə-ˈfər-mə-ˌtȯr-ē\

Definition of affirmatory

: giving affirmation an affirmatory gesture

First Known Use of affirmatory

1651, in the meaning defined above

History and Etymology for affirmatory

affirmation + -ory

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