is saying "grammatically wrong" gramatically incorrect?
No.
The word "wrong" is an adjective, and the word "grammatically" is an adverb. Adverbs can modify adjectives.
To determine if saying "grammatically wrong" is grammatically incorrect, we need to analyze the phrase.
The phrase "grammatically wrong" is a combination of the adverb "grammatically" and the adjective "wrong." Adverbs modify verbs, adjectives, or other adverbs, while adjectives modify nouns or pronouns.
In this case, "grammatically" modifies the adjective "wrong." Since "wrong" is a noun or pronoun modifier, it is grammatically correct to use an adverb to modify it and say "grammatically wrong."
Therefore, saying "grammatically wrong" is grammatically correct, as it follows the rules of English grammar.