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make sure

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1

Make certain, establish something without doubt, as in Make sure all the doors are locked. It is also put as make sure of, as in Before you make that speech, make sure of your facts. This usage was first recorded in 1565.

2

make sure of. Act so as to be certain of something, as in He wanted to make sure of his own district before seeking support elsewhere. This usage was first recorded in 1673.

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TAKE JOY IN ACING THIS QUIZ ON “PRIDE” SYNONYMS
Hold your head up high as you embark on this quiz that explores some of the synonyms and meanings of “pride.”
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The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.

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