[verb in-fiks, in-fiks; noun in-fiks]
verb (used with object)
  1. to fix, fasten, or drive in: He infixed the fatal spear.
  2. to implant: to infix a habit.
  3. to instill (a fact, idea, etc.) in the mind or memory; impress.
  4. Grammar. to add as an infix.
verb (used without object)
  1. Grammar. (of a linguistic form) to admit an infix.
  1. Grammar. an affix that is inserted within the body of the element to which it is added, as Latin m in accumbō “I lie down,” as compared with accubuī “I lay down.”

Origin of infix

1495–1505; < Latin infīxus past participle of infīgere to fasten in. See in-2, fix
Related formsin·fix·ion [in-fik-shuhn] /ɪnˈfɪk ʃən/, nounun·in·fixed, adjective

Synonyms for infix Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for infixion


verb (ɪnˈfɪks, ˈɪnˌfɪks)
  1. (tr) to fix firmly in
  2. (tr) to instil or inculcate
  3. grammar to insert (an affix) or (of an affix) to be inserted into the middle of a word
noun (ˈɪnˌfɪks)
  1. grammar an affix inserted into the middle of a word
Derived Formsinfixation or infixion (ɪnˈfɪkʃən), 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