/ ɪˈvɪns; NAmE / verb
[ vn ] ( formal ) to show clearly that you have a feeling or quality :
He evinced a strong desire to be reconciled with his family.
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WORD ORIGIN
late 16th cent. (in the sense prove by argument or evidence ): from Latin evincere overcome, defeat, from e- (variant of ex- ) out + vincere conquer.