ungrammatical
🇺🇸
/ˌʌnɡrəˈmætɪkl/
🇬🇧
/ˌʌnɡrəˈmætɪkl/
not following the rules of grammar
The student's essay was full of ungrammatical sentences, making it difficult to understand.
學生的論文充滿了不合語法的句子,使人難以理解。