make demands of

make demands of (one)

To put a great deal of pressure on one to perform at an extremely high level. This is a cutthroat business, and it makes demands of anyone who wants to excel in it. The coach makes demands of all the kids who play on his team, but they also have more championship titles than any other team in the state.
See also: demand, make, of
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.

make demands of someone or something

 and make demands on someone or something
to expect someone or something to do something or act in a particular way. Please don't make demands of everyone in the shop. The boss is making a lot of demands on the new machinery.
See also: demand, make, of
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.
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