improve (up)on (something)

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improve (up)on (something)

To make something better or more outstanding. Your grade is pretty good so far, but I think you can improve upon it as the semester goes on. Do you have any ideas for how we can improve on this ad campaign?
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improve (up)on something

to make something better. (Upon is formal and less commonly used than on.) Do you really think you can improve upon this song? No one can improve on my favorite melody.
See also: improve, on

improve on

Make beneficial additions or changes to, as in The company is trying to improve on the previous model. [Late 1600s]
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improve on

or improve upon
v.
To make beneficial additions or changes to something; make something better: We can improve on this room by painting it. I improved upon the recipe by adding more spices.
See also: improve, on
References in periodicals archive ?
They achieved a precision of 0.5 percent, independently corroborating and improving upon the French results.
By reconfiguring about the same amount of electronic hardware contained in today's best parallel-processing computers, computer scientists Tommaso Toffoli and Norma Margolus say they are improving upon their earlier versions of what they call cellular automala machines (CAMs).
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