ETYM Latin grammaticus, grammaticalis; Greek, skilled in grammar, knowing one's letters, from gramma a letter: cf. French grammatical. Related to Grammar.
1. Conforming to the rules of grammar or usage accepted by native speakers; SYN. well-formed.
2. Of or pertaining to grammar; SYN. grammatic.

ETYM Cf. French linguistique.
1. Consisting of or related to language; SYN. lingual.
2. Of or relating to the scientific study of language.