Idioms and Phrases with make demands on
make demands on
Urgently require something of someone, as in Her mother's illness has made considerable demands on her time. [Late 1300s]
The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.