Pronunciation: (hop'ing), [key]
1. working energetically; busily engaged: He kept the staff hopping in order to get the report finished.
2. going from one place or situation to another of a similar specified type (usually used in combination): restaurant-hopping.
3. hopping mad, furious; enraged: He was hopping mad when his daughter dropped out of college.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.