Is “Rational” a Scrabble word?
Yes
RATIONAL
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 Rational
/ˈɹæʃ(ə)nəl/
noun
1.A rational number: a number that can be expressed as the quotient of two integers.
“The quotient of two rationals is again a rational.”
adjective
1.Capable of reasoning.
“Man is a rational creature.”
2.Logically sound; not contradictory or otherwise absurd.
“His statements were quite rational.”
3.(of a person or personal characteristics) Healthy or balanced intellectually; exhibiting reasonableness.
“rational conduct”