Is “Rules” a Scrabble word?
Yes
RULES
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 Rules
/ˈɹuːlz/
noun
1.A regulation, law, guideline.
“All participants must adhere to the rules.”
2.A ruler; device for measuring, a straightedge, a measure.
3.A straight line (continuous mark, as made by a pen or the like), especially one lying across a paper as a guide for writing.
verb
1.To regulate, be in charge of, make decisions for, reign over.
2.To excel.
“This game rules!”
3.To mark (paper or the like) with rules (lines).
verb
1.To revel.