grammatical

/grəˈmædəkəl/

/grəˈmætɪkəl/

If your know-it-all friend advises you not to say, "Me and John went...," she is giving you grammatical advice. In other words, she's correcting your terrible grammar. (BTW, it should be "John and I...")

The adjective grammatical comes up most often in English classes, since it describes anything having to do with parts of speech, syntax, and other elements of a well-written sentence. The Latin root word is grammaticalis, meaning "of a scholar," which in turn comes from the word grammaticus, "pertaining to grammar." If you're an authority on the English language, you can feel free to describe yourself as a grammatical scholar.

Definitions of grammatical

1. adjective

   of or pertaining to grammar
   “grammatical rules”

   “grammatical gender”

   synonyms: grammatic
2. adjective

   conforming to the rules of grammar or usage accepted by native speakers
   “spoke in grammatical sentences”

   synonyms: well-formed

   antonyms:

   ungrammatical

   not grammatical; not conforming to the rules of grammar or accepted usage

   incorrect

   (of a word or expression) not agreeing with grammatical principles