execute
verb
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sign in the presence of witnesses“The President executed the treaty”
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put in effectaction
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carry out or perform an actiondo
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kill as a means of socially sanctioned punishment“In some states, criminals are executed”put to death
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murder in a planned fashion“The Mafioso who collaborated with the police was executed”
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carry out a process or program, as on a computer or a machinerun
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carry out the legalities of“execute a will or a deed”