it won't do

Meaning

1. Oxford57% of films

   used to say that a situation is not acceptable and should be changed or improved

   It won't do.

   No! It won't do.

2. Editorial29% of films

   will not help or be of any benefit (usually in “it won't do … any/much good”)

In the movies · 3

• That it won't do, Fagin, so it's no use you tryin' it on.Oliver Twist1948
• No! It won't do.Shadowlands1993
• It won't do.The Silence of the Lambs1991
• Can't do it. Won't do it.The Place Beyond the Pines2013
• It won't do a negative G push-over.Top Gun1986
• That won't do.Deadpool2016
• I won't do it.The French Dispatch2021
• I won't do it.eXistenZ1999

From the same entry

• be to do with
• have something, nothing, a lot, to do with
• not do anything lot for
• nothing doing
• no you don't
• that does it
• that's done it
• that will do
• what do you do for
• what is doing
• do away with
• do away with