es gramaticalmente correcta

is grammatically correct

→ ser
phrase Rare #43,569
is grammatically correct Used to say that a sentence or phrase follows grammar rules. The feminine form here agrees with the implied noun like 'oración' or 'frase'.
SP: Tu oración es gramaticalmente correcta.
EN: Your sentence is grammatically correct.

Esta frase suena bien, pero no es gramaticalmente correcta.

This sentence sounds good, but it isn’t grammatically correct.

La oración que escribiste es gramaticalmente correcta.

The sentence you wrote is grammatically correct.

Esta frase suena bien y es gramaticalmente correcta.

This sentence sounds good and is grammatically correct.

Esta frase es gramaticalmente correcta.

This sentence is grammatically correct.

Dudo sobre qué oración es gramaticalmente correcta.

I'm unsure which sentence is grammatically correct.