do someone or something a power of good

do (one) a power of good

To be very beneficial to one. If you're feeling sad, getting out in the sunlight should do you a power of good.
See also: good, of, power
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.

do someone or something a power of good

be very beneficial to someone or something. informal
See also: good, of, power, someone, something
Farlex Partner Idioms Dictionary © Farlex 2017
See also: