"to flog a dead horse"
to continue to put effort into something that will never be productive or function again no matter how much effort is expended
Related words and phrases:
Two mechanics are talking on the production shop floor ...
Alex: Well, I put another five hours into that old machine.
Peter: Did you get it working again?
Alex: I'm not sure exactly what is expected from a one hundred year old machine. No I didn't manage to get it going this time.
Peter: Are you going to keep working on it?
Alex: I believe that the machine is finished. It will never run again and there is no sense in flogging a dead horse. No, I won't put any more work into the machine.
Two volunteers for a not-for-profit public service organization are talking ...
Sidney: Did we get the government grant?
Lesley: No. That was the fifth time that we had applied.
Sidney: Are we going to apply again?
Lesley: I don't think so. There's no sense flogging a dead horse.
Flogging a dead horse will not produce any results.
1) I'm not going to flog a dead horse any further.
2) I will bow out, not wanting to flog a dead horse and accept that it is what it is.
3) Don't flog a dead horse if a partnership really isn't working.
4) Neither of these situations are ones where you should be trying to flog a dead horse and trying to breathe life into the dead carcass.
5) After all why flog a dead horse? Why write a book to refute a totally discredited theory?
6) There are only three reasons why anyone would flog a dead horse to the extent that he does.
7) Do you think Nintendo can flog a dead horse and simply release another dated system?
8) If you're not getting the desired effect from it, don't flog a dead horse. Learn and adapt.
9) Not to flog a dead horse but people please stop and think before you rationalize evil.
10) Any advice would be great as I do like him but do not want to flog a dead horse.
11) Hate to flog a dead horse, but the retail shelves continue to be disturbingly empty.
12) Not to flog a dead horse here since other commenters have already acknowledged my point - but ...
13) While some have labelled the initiative as flogging a dead horse is their dismissal a tad shortsighted?
14) I'm betting I'm flogging a dead horse trying to point out the obvious.
15) Rather than flogging a dead horse, how about people start asking 'why'?
16) Stop flogging a dead horse: dismantle the Eurozone, emancipate the weak economies and let them die.
17) Don't even bother trying, you are just flogging a dead horse.
18) We should close our embassy there - no point flogging a dead horse - they are deadbeats.
19) By mid-morning I couldn't shake the feeling that we were flogging a dead horse.
20) I fear the system is breaking down, there is no point flogging a dead horse.