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[uhn-gruh-mat-i-kuh l] /ˌʌn grəˈmæt ɪ kəl/
grammatically incorrect or awkward; not conforming to the rules or principles of grammar or accepted usage:
an ungrammatical sentence.
Origin of ungrammatical
First recorded in 1645-55; un-1 + grammatical
Related forms
ungrammatically, adverb Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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Examples from the Web for ungrammatical
Historical Examples
  • It is curious enough that this sentence of the Bishop is, itself, ungrammatical!

    The Verbalist Thomas Embly Osmun, (AKA Alfred Ayres)
  • His dress was very plain and poor, his manner was uncultured, his language was ungrammatical.

    Three People Pansy
  • If I were asked an opinion I would call this an ungrammatical nation.

    Mark Twain's Speeches Mark Twain (Samuel Clemens)
  • She knew that he was ungrammatical, but she denied that he was uncouth.

    The Job Sinclair Lewis
  • Which was ungrammatical, I admit, but the best I could do under the prevalent conditions.

    The Abandoned Farmers Irvin S. Cobb
  • What if there were imperfect, or ungrammatical sentences in it?

  • As for us, we mean to be romantic and sentimental and unashamed and ungrammatical.

    The Spell of Scotland

    Keith Clark
  • The Italian spoke it with the soft, ungrammatical fluency of his race.

    The Drunkard

    Cyril Arthur Edward Ranger Gull
  • Blots like the ungrammatical fourth line are not infrequent with him.

    Keats Sidney Colvin
  • "Never no more for mine," he declared, with ungrammatical force.

British Dictionary definitions for ungrammatical


(of a sentence) not regarded as correct by native speakers of the language
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 ungrammatical

1650s, from un- (1) "not" + grammatical. Related: Ungrammatically.

Online Etymology Dictionary, © 2010 Douglas Harper
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