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[en-shoo r, -shur] /ɛnˈʃʊər, -ˈʃɜr/
verb (used with object), ensured, ensuring.
to secure or guarantee:
This letter will ensure you a hearing.
to make sure or certain:
measures to ensure the success of an undertaking.
to make secure or safe, as from harm.
insure (defs 1–3).
Origin of ensure
1350-1400; Middle English ensuren < Anglo-French enseurer. See en-1, sure
Related forms
ensurer, noun
unensured, adjective
3. protect, guard, safeguard. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2016.
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Examples from the Web for ensuring
Contemporary Examples
Historical Examples
  • To such a pitch was she wrought up, that there was left but one way of ensuring the sleep she needed.

    A Veldt Official Bertram Mitford
  • As the rights are equal, the power of ensuring them must be equal.

    Lectures on the French Revolution John Emerich Edward Dalberg-Acton
  • On the other hand, the coach should do his best to render the excuse untenable by ensuring proper ‘work’ at each thwart.

    Boating W. B. Woodgate
  • It seems to me that there is only one effective method of ensuring world-peace.

  • Before that unjust Tribunal, there was little or no order of procedure, ensuring to any accused person any reasonable hearing.

    A Tale of Two Cities Charles Dickens
British Dictionary definitions for ensuring


/ɛnˈʃʊə; -ˈʃɔː/
verb (transitive)
(may take a clause as object) to make certain or sure; guarantee: this victory will ensure his happiness
to make safe or secure; protect
Derived Forms
ensurer, noun
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for ensuring



late 14c., from Anglo-French enseurer, from en- "make" (see en- (1)) + Old French seur "sure" (see sure); probably influenced by Old French asseurer "assure." Related: Ensured; ensures; ensuring.

Online Etymology Dictionary, © 2010 Douglas Harper
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