1 adj Grammatical is used to indicate that something relates to grammar.
Should the teacher present grammatical rules to students?, ...grammatical errors.
grammatically adv ADV adj/-ed
...grammatically correct language.
2 adj If someone's language is grammatical, it is considered correct because it obeys the rules of grammar.
...a new test to determine whether students can write grammatical English.
grammatically adv ADV after v
One in five undergraduates cannot write grammatically.
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