9 Grammatical Pitfalls


[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. 2015.
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Examples from the web for ensure
  • The large single panes ensure that there is no visual interruption between inside and outside.
  • We will ensure that these networks are secure, trustworthy and resilient.
  • Some measures are being taken to ensure economic and financial stability.
  • By revealing the crux of the story upfront, you pique interest and ensure you don't lose your own trail.
  • To ensure full consideration, materials should be received as soon as possible.
  • You can help ensure that our vital work continues for future generations.
  • The author takes great care to ensure that readers understand the feelings behind the memories.
  • You'll usually need to fill the basin more than once to ensure that water penetrates throughout the entire root zone.
  • Railways are constantly carrying out research and subsequent improvements to ensure safety.
  • Accordingly, the proper procedure of art is to let it go in such a manner as to ensure its coming back again.
British Dictionary definitions for ensure


/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 ensure

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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