Variable
Vacillating
Synonyms: Changeable, varying, fluctuating, wavering, inconstant, fluid, unsteady, unstable, movable, protean, unfixed, capricious, fickle, volatile, undependable, up and down, peaky, variational, changing, shifting, irregular, vacillating, inconsistent, floating, uneven, unsettled, mutable, chameleonic, fitful, temperamental, kaleidoscopic, unpredictable, unreliable, blowing hot and cold, and changeful.
Shifting
Synonyms: Changeable, varying, fluctuating, wavering, inconstant, fluid, unsteady, unstable, movable, protean, unfixed, capricious, fickle, volatile, undependable, up and down, peaky, variational, changing, shifting, irregular, vacillating, inconsistent, floating, uneven, unsettled, mutable, chameleonic, fitful, temperamental, kaleidoscopic, unpredictable, unreliable, blowing hot and cold, and changeful.
Example Sentences
Temperature is a variable factor here.
The outcome depends on many variables.
The weather is highly variable today.
Price is a variable in economics.
His mood was quite variable.