grammatical grammatical /grəˈmætɪkəl/

adjective

1. () Of or pertaining to grammar  ( grammatical , grammatic )
   of or pertaining to grammar
    The grammatic structure of a sentence
   the grammatic structure of a sentence
    Grammatical rules
   grammatical rules
    Grammatical gender
   grammatical gender
   
2. Conforming to the rules of grammar or usage accepted by native speakers  ( grammatical , well-formed )
   conforming to the rules of grammar or usage accepted by native speakers
    Spoke in grammatical sentences
   spoke in grammatical sentences