noun. ['dɪˈsɝːvəs'] an act intended to help that turns out badly.
1. Noun, singular or mass You do a disservice to your business by trying to take a shortcut.
1. If we long to believe that the stars rise and set for us, that we are the reason there is a Universe, does science do us a disservice in deflating our conceits? - Carl Sagan, The Demon-Haunted World: Science as a Candle in the Dark