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[fawr-tuh-fahy] /ˈfɔr təˌfaɪ/
verb (used with object), fortified, fortifying.
to protect or strengthen against attack; surround or provide with defensive military works.
to furnish with a means of resisting force or standing strain or wear:
to fortify cotton with nylon.
to make strong; impart strength or vigor to:
to fortify oneself with a good breakfast.
to increase the effectiveness of, as by additional ingredients:
to fortify a diet with vitamins; to fortify a lotion with lanolin.
to strengthen mentally or morally:
to be fortified by religious faith.
to confirm or corroborate:
to fortify an accusation with facts.
Nutrition. to add one or more ingredients to (a food) to increase its nutritional content.
to add alcohol to (wine or the like).
verb (used without object), fortified, fortifying.
to set up defensive works; erect fortifications.
Origin of fortify
late Middle English
1400-50; late Middle English fortifien < Middle French fortifier < Late Latin fortificāre, equivalent to Latin forti(s) strong + -ficāre -fy
Related forms
fortifiable, adjective
fortifier, noun
fortifyingly, adverb
nonfortifiable, adjective
nonfortifying, adjective
refortify, verb (used with object), refortified, refortifying.
underfortify, verb (used with object), underfortified, underfortifying.
unfortifiable, adjective
unfortified, adjective
well-fortified, adjective
3. strengthen, reinforce. 5. hearten, embolden. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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Examples from the Web for fortified
Contemporary Examples
Historical Examples
  • Many women that we have interrogated on this matter have fortified this opinion.

    Plain Facts for Old and Young John Harvey Kellogg
  • fortified by the hope, he began to walk back toward the light.

    The Triumph Of Night Edith Wharton
  • A chain of fortified posts was to be established among the Grampians, and at various commanding points in Invernessshire.

    Claverhouse Mowbray Morris
  • Nothing, by the assembling of the senate in this fortified place?

    Museum of Antiquity L. W. Yaggy
  • We went to the rampart—a small height formed by nature and fortified by a palisade.

    Marie Alexander Pushkin
British Dictionary definitions for fortified


verb (mainly transitive) -fies, -fying, -fied
(also intransitive) to make (a place) defensible, as by building walls, digging trenches, etc
to strengthen physically, mentally, or morally
to strengthen, support, or reinforce (a garment, structure, etc)
to add spirits or alcohol to (wine), in order to produce sherry, port, etc
to increase the nutritious value of (a food), as by adding vitamins and minerals
to support or confirm: to fortify an argument with facts
Derived Forms
fortifiable, adjective
fortifier, noun
fortifyingly, adverb
Word Origin
C15: from Old French fortifier, from Late Latin fortificāre, from Latin fortis strong + facere to make
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 fortified



early 15c., "increase efficacy" (of medicine); mid-15c., "provide (a town) with walls and defenses," from Old French fortifiier (14c.) "to fortify, strengthen," from Late Latin fortificare "to strengthen, make strong," from Latin fortis "strong" (see fort) + facere "to make" (see factitious).

Sense of "to strengthen mentally or morally" is from late 15c. Meaning "add liquor or alcohol" is from 1880. Related: Fortified; fortifying.

Online Etymology Dictionary, © 2010 Douglas Harper
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