be in a good cause

be in a good cause

To have a beneficial, often charitable, aim or effect. Mom just wants to keep you out of trouble—her rules are in a good cause.
See also: cause, good
Farlex Dictionary of Idioms.

be (all) for/in a good ˈcause

worth doing, because it is helping other people: Most motorists seem to accept that the speed cameras are all in a good cause (= they help to keep people safe on the roads by stopping people driving too fast).
See also: cause, good
Farlex Partner Idioms Dictionary
See also:
  • have no cause to (do something)
  • have cause to (do something)
  • have cause to do
  • go to (one's) head
  • go to head
  • go to one's head
  • go to your head
  • cause trouble
  • mess with (one's) head
  • mess with someone's head