mutable

"The dancer's execution of the pirouette was graceful and precise. "

"He is a student of life."

"My friend told me there was something in the box, but I didn't know what it was yet. "

"The amount of time it takes to finish my homework is a variable; sometimes it takes me an hour, other times it takes much longer. "

"The weather forecast is changeable, so we might need an umbrella. "

"My daughter has a busy schedule this semester, with three classes and a part-time job. "

"The product is undergoing a change in order to improve it."

"He had to incline his body against the gusts to avoid being blown down in the storm."

"The tadpole changed into a frog.   Stock prices are constantly changing."

"Watch the dynamic between the husband and wife when they disagree."

"If the government wants graduates to stay in the country they should offer more incentives."

"The average of 10, 20 and 24 is (10 + 20 + 24)/3 = 18."