Meaning of the word ungrammatical in English

What does ungrammatical mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

ungrammatical

US /ˌʌn.ɡrəˈmæt̬.ɪ.kəl/
UK /ˌʌn.ɡrəˈmæt.ɪ.kəl/
"ungrammatical" picture

Adjective

not conforming to the rules of grammar or syntax

Example:
The sentence 'He don't like it' is ungrammatical.
Using 'ain't' is often considered ungrammatical in formal English.