Grammarian

n.	1.	One versed in grammar, or the construction of languages; a philologist.
	2.	One who writes on, or teaches, grammar.

Noun

1.

grammarian - a linguist who specializes in the study of grammar and syntax Synonyms: syntactician

dialectician, etymologer, etymologist, glossarist, glossographer, grammaticaster, grammatist, lexicographer, lexicologist, linguist, linguistic scholar, linguistic scientist, linguistician, orthoepist, paleographer, philologaster, philologer, philologian, philologist, phonemicist, phonetician, phoneticist, phonologist, semanticist, semasiologist