What are the antonyms for ENSURE?

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Synonyms for ENSURE

Usage Examples for ENSURE

  1. She was apparently killed to ensure the safety of this den. - "The Secret Passage" by Fergus Hume
  2. It is considered that- so true is the old proverb that if you give a dog a bad name you may as well hang him- nothing more need be done respecting a new and therefore unpopular doctrine than to so label it as to ensure its repudiation by honest but unthinking men. - "Practical Politics; or, the Liberalism of To-day" by Alfred Farthing Robbins