variable

Universal Words adjective, noun adjective 1 often changing; likely to change: variable rainfall / temperature * The acting is of variable quality (= some of it is good and some of it is bad). compareINVARIABLE 2 able to be changed: The drill has variable speed control. * variable lighting variably adverb noun a situation, number or quantity that can vary or be varied: With so many variables to consider, it is difficult to calculate the cost. * The temperature remained constant while pressure was a variable in the experiment. OPPCONSTANT