Idioms and Phrases with get after
Urge or scold someone about doing something. For example, Dad should get after Billy to mow the lawn, or Mary got after Jane for forgetting her house key. Also see keep after.
The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.