[uhn-gruh-mat-i-kuh l]


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 formsun·gram·mat·i·cal·ly, adverb
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Related Words for ungrammatical

ill-formed, improper, inaccurate, incorrect, imprecise, nonstandard

Examples from the Web for ungrammatical

Historical Examples of ungrammatical

  • 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.

  • 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.

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

Word Origin and History for ungrammatical

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

Online Etymology Dictionary, © 2010 Douglas Harper