grammaticality

[ gruh-mat-i-kal-i-tee ]
/ grəˌmæt ɪˈkæl ɪ ti /

noun

the state or quality of being grammatical.
Also gram·mat·i·cal·ness [gruh-mat-i-kuh l-nis] /grəˈmæt ɪ kəl nɪs/.

Origin of grammaticality

First recorded in 1960–65; grammatical + -ity