grammatical

adjective

gram·​mat·​i·​cal grə-ˈma-ti-kəl 

1

: of or relating to grammar

2

: conforming to the rules of grammar

a grammatical sentence

grammaticality

grə-ˌma-tə-ˈka-lə-tē 

noun

grammaticalness

grə-ˈma-ti-kəl-nəs 

noun

Examples of grammatical in a Sentence

That sentence is not grammatical.

Recent Examples on the Web

But more variations of Austronesian languages have been identified in Taiwan, accompanied with more intricate grammatical structures and expansive vocabularies, which has provided insights for linguists. — Wayne Chang, CNN Money, 17 June 2026

Getting a simple explanation of a grammatical rule or the nuance of a term is a shortcut that helps adults learn faster. — Jill Duffy, PC Magazine, 28 May 2026

The patients’ hippocampal neurons encoded specific semantic and grammatical features of spoken words. — Jacek Krywko, Scientific American, 6 May 2026

Maybe one day the old pronoun whom will kick the grammatical bucket. — Richard Lederer, San Diego Union-Tribune, 25 Apr. 2026

Word History

Etymology

borrowed from Middle French and Late Latin; Middle French grammaticale, borrowed from Late Latin grammaticālis, from Latin grammatica grammar + -ālis -al entry 1

First Known Use

1530, in the meaning defined at sense 1

Phrases Containing grammatical

• grammatical gender
• grammatical meaning

Rhymes for grammatical

• dogmatical
• fanatical
• sabbatical
• catechol
• statical
• emblematical
• enigmatical
• kinematical
• mathematical
• problematical
• ungrammatical

Kids Definition

grammatical

adjective

gram·​mat·​i·​cal grə-ˈmat-i-kəl 

1

: of or relating to grammar

2

: conforming to the rules of grammar

a grammatical sentence

grammaticality

-ˌmat-ə-ˈkal-ət-ē 

noun

grammatically

-ˈmat-i-k(ə-)lē 

adverb

grammaticalness

-kəl-nəs 

noun