[v. uh-fiks; n. af-iks]
verb (used with object)
to fasten, join, or attach (usually followed by to ): to affix stamps to a letter.
to put or add on; append: to affix a signature to a contract.
to impress (a seal or stamp).
to attach (blame, reproach, ridicule, etc.).
something that is joined or attached.
Grammar. a bound inflectional or derivational element, as a prefix, infix, or suffix, added to a base or stem to form a fresh stem or a word, as -ed added to want to form wanted, or im- added to possible to form impossible.
Compare combining form.

1525–35; < Latin affīxus fastened to (past participle of affīgere), equivalent to af- af- + fīg- fasten + -sus, variant of -tus past participle suffix

affixable, adjective
affixal [a-fik-suhl] , affixial [a-fik-see-uhl] , adjective
affixer, noun
affixment, noun
reaffix, verb (used with object)
unaffixed, adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
1.  to attach, fasten, join, or stick: to affix a poster to the wall
2.  to add or append: to affix a signature to a document
3.  to attach or attribute (guilt, blame, etc)
4.  prefix suffix See also infix a linguistic element added to a word or root to produce a derived or inflected form: -ment in establishment is a derivational affix; -s in drowns is an inflectional affix
5.  something fastened or attached; appendage
[C15: from Medieval Latin affixāre, from ad- to + fixāre to fix]

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Word Origin & History

1530s, from M.L. affixare, freq. of L. affigere (pp. affixus) "fasten to," from ad- "to" + figere "fasten" (see fix). First used by Scottish writers and perhaps from M.Fr. affixer, a temporarily re-Latinized spelling of O.Fr. afichier (modern Fr. afficher).
Online Etymology Dictionary, © 2010 Douglas Harper
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Encyclopedia Britannica


a grammatical element that is combined with a word, stem, or phrase to produce derived and inflected forms. There are three types of affixes: prefixes, infixes, and suffixes. A prefix occurs at the beginning of a word or stem (sub-mit, pre-determine, un-willing); a suffix at the end (wonder-ful, depend-ent, act-ion); and an infix occurs in the middle. English has no infixes, but they are found in American Indian languages, Greek, Tagalog, and elsewhere. Examples of English inflectional suffixes are illustrated by the -s of "cats," the -er of "longer," and the -ed of "asked." See also morphology

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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Example sentences
Remove the protective backing on the double-stick tape on the top edge and
  affix the film to it.
The bread seems to affix itself magnetically to the fingers.
Store these smaller boxes in drawers and affix the boxes with prominent labels
  that indicate their contents.
He hopes to one day permanently affix artificial legs to the bones of horses
  and other creatures.
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