Dictionary.com
Thesaurus.com
Synonyms

grammatical

American  
[gruh-mat-i-kuhl] / grəˈmæt ɪ kəl /

adjective

  1. of or relating to grammar.

    grammatical analysis.

  2. conforming to standard usage.

    grammatical speech.


grammatical British  
/ ɡrəˈmætɪkəl /

adjective

  1. of or relating to grammar

  2. (of a sentence) well formed; regarded as correct and acceptable 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

Other Word Forms

  • antigrammatical adjective
  • antigrammatically adverb
  • antigrammaticalness noun
  • grammatically adverb
  • grammaticalness noun
  • hypergrammatical adjective
  • hypergrammatically adverb
  • hypergrammaticalness noun

Etymology

Origin of grammatical

1520–30; < Latin grammatic ( us ) (< Greek grammatikós knowing one's letters, equivalent to grammat-, stem of grámma letter + -ikos -ic ) + -al 1

Explanation

If your know-it-all friend advises you not to say, "Me and John went...," she is giving you grammatical advice. In other words, she's correcting your terrible grammar. (BTW, it should be "John and I...") The adjective grammatical comes up most often in English classes, since it describes anything having to do with parts of speech, syntax, and other elements of a well-written sentence. The Latin root word is grammaticalis, meaning "of a scholar," which in turn comes from the word grammaticus, "pertaining to grammar." If you're an authority on the English language, you can feel free to describe yourself as a grammatical scholar.

Keep Reading on Vocabulary.com

Vocabulary lists containing grammatical

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

“I wish you had let me review before sending…the grammatical errors and spelling mistakes will make it at least harder for early admission,” Epstein wrote.

From The Wall Street Journal • Mar. 11, 2026

AI is also more likely to create lyrics that follow a correct grammatical structure, says Rich, whereas some of the most beautiful or memorable words penned by humans don't always make sense.

From BBC • Nov. 21, 2025

Unlike languages such as French and Spanish, Yautja has no grammatical gender, so nouns aren’t assigned gender categories.

From Los Angeles Times • Nov. 10, 2025

Accusations of AI use are concerning, sure, but couldn’t they also result in a grammatical Streisand effect of people learning about or becoming reacquainted with the multipurpose mark?

From Salon • Jun. 11, 2025

I want you to make a grammatical four-word sentence as quickly as possible out of each set.

From "Blink" by Malcolm Gladwell