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extraneous

[ik-strey-nee-uh s] /ɪkˈstreɪ ni əs/
adjective
1.
introduced or coming from without; not belonging or proper to a thing; external; foreign:
extraneous substances in our water.
2.
not pertinent; irrelevant:
an extraneous remark; extraneous decoration.
Origin
1630-1640
1630-40; < Latin extrāneus external, foreign, equivalent to extr(a)- extra- + -ān(us) -an + -eus -eous
Related forms
extraneously, adverb
extraneousness, noun
nonextraneous, adjective
nonextraneously, adverb
nonextraneousness, noun
unextraneous, adjective
unextraneously, adverb
Can be confused
Synonyms
1. extrinsic, adventitious, alien. 2. inappropriate, nonessential, superfluous.
Antonyms
1. intrinsic. 2. pertinent, relevant.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for un extraneous

extraneous

/ɪkˈstreɪnɪəs/
adjective
1.
not essential
2.
not pertinent or applicable; irrelevant
3.
coming from without; of external origin
4.
not belonging; unrelated to that to which it is added or in which it is contained
Derived Forms
extraneously, adverb
extraneousness, noun
Word Origin
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
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Word Origin and History for un extraneous
extraneous
1638, from L. extraneus, from extra "outside of."
Online Etymology Dictionary, © 2010 Douglas Harper
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