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illogical

[ih-loj-i-kuh l] /ɪˈlɒdʒ ɪ kəl/
adjective
1.
not logical; contrary to or disregardful of the rules of logic; unreasoning:
an illogical reply.
Origin of illogical
1580-1590
1580-90; il-2 + logical
Related forms
illogically, adverb
illogicalness, noun
Synonyms
unsound, absurd, preposterous.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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British Dictionary definitions for illogical

illogical

/ɪˈlɒdʒɪkəl/
adjective
1.
characterized by lack of logic; senseless or unreasonable
2.
disregarding logical principles
Derived Forms
illogicality (ɪˌlɒdʒɪˈkælɪtɪ), illogicalness, noun
illogically, adverb
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 illogical
adj.

1580s, from assimilated form of in- (1) "not, opposite of" + logical. Related: Illogically.

Online Etymology Dictionary, © 2010 Douglas Harper
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