Answer: variable

AnswerCrossword Clue
VARIABLE

Like changing skies

VARIABLE

Algebraic uncertainty

VARIABLE

Mathematical quantity

VARIABLE
Fluctuating
VARIABLE
Subject to change.
VARIABLEFluctuating.
VARIABLELike some stars
VARIABLEFickle
VARIABLESomething not to be relied on
VARIABLELike some manufacturing costs
VARIABLEX or Y, in an equation
VARIABLEX or Y, in algebra
VARIABLENot fixed