go for nothing

go for nothing (third-person singular simple present goes for nothing, present participle going for nothing, simple past went for nothing, past participle gone for nothing)

1. To have no value, or carry no weight with someone.
   • 1867, Anthony Trollope, The Last Chronicle of Barset:

     Is not your friend's business your own business? What does friendship mean if it is not so? And when I tell you that it is my business, mine of right, does that go for nothing with you?

   • 1926, Alessandro Manzoni, The Betrothed (I Promessi Sposi), page 333:

     And I tell you they are promises that go for nothing.