[ ik-strey-nee-uhs ]
/ ɪkˈstreɪ ni əs /


introduced or coming from without; not belonging or proper to a thing; external; foreign: extraneous substances in our water.
not pertinent; irrelevant: an extraneous remark; extraneous decoration.

Nearby words

  1. extrality,
  2. extramarital,
  3. extrametrical,
  4. extramundane,
  5. extramural,
  6. extraneously,
  7. extranet,
  8. extranuclear,
  9. extraocular muscle,
  10. extraordinaire

Origin of extraneous

1630–40; < Latin extrāneus external, foreign, equivalent to extr(a)- extra- + -ān(us) -an + -eus -eous

ANTONYMS FOR extraneous

Related forms
Can be confusedextraneous external extrinsic internal intrinsic

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for non-extraneous


/ (ɪkˈstreɪnɪəs) /


not essential
not pertinent or applicable; irrelevant
coming from without; of external origin
not belonging; unrelated to that to which it is added or in which it is contained
Derived Formsextraneously, adverbextraneousness, noun

Word Origin for extraneous

C17: from Latin extrāneus external, from extrā outside

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

Word Origin and History for non-extraneous



1630s, from Latin extraneus "external, strange," from extra "outside of" (see extra-).

Online Etymology Dictionary, © 2010 Douglas Harper