make a case for

make (out) a case for something/doing something

to give good reasons why something should be done. You've certainly made out a case for us buying a dishwasher.

See also: case

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make a case for something

to explain why something should be done. Everything seems to be going pretty well, and she has yet to make a case for change.

Usage notes: also used in the form make a case that to explain that something is true: It is easy to make a case that he's one of the best baseball players around.

Etymology: based on the legal meaning of make a case (= to show that what you say is true)

See also: case