expend (something) on (someone or something)(redirected from expend on them)
expend (something) on (someone or something)
To use some resource to attempt to make a change of some kind in someone or something in particular. I don't want to expend much energy on my side business anymore because I'm just not making that much money from it. We don't have to expend much training time on Lisa—she already knows the ropes.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
expend something on someone or something
to use something on someone or something. Don't expend too much energy on him. He isn't worth it. There is no point in expending any more money on this car.
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.