Is “Grammar” a Scrabble word?
Yes
GRAMMAR
Valid in at least one Scrabble dictionary
Valid in these dictionaries
SOWPODS / CSW
Scrabble UK & International
TWL / NWL
Scrabble North America
Large English Dictionary
General English word list
Meaning of Grammar
/ˈɡɹæm.ə(ɹ)/
noun
1.A system of rules and principles for speaking and writing a language.
2.The study of the internal structure of words (morphology) and the use of words in the construction of phrases and sentences (syntax).
3.A book describing the rules of grammar of a language.
Synonyms: morpho-syntax, glomery
verb
1.To discourse according to the rules of grammar; to use grammar.