Definition for the word Variable.
a star that varies noticeably in brightnessa quantity that can assume any of a set of valuesmarked by diversity or differencea symbol (like x or y) that is used in mathematical or logical expressions to represent a variable quantityliable to or capable of changesomething that is likely to vary; something that is subject to variation(used of a device) designed so that a property (as e.g. light) can be varied
Is Variable a Valid Scrabble Word?
Yes Variable is a valid Scrabble word.
Scrabble Point Value of Variable: 13 Points