Sentence examples for it won't do from inspiring English sources

"it won't do" is a correct and usable phrase in written English.
It is used to express that something is not acceptable or sufficient. You can use it in any situation where something is not satisfactory or not up to the expected standard. For example: - "I asked for a refund but they said it won't do without a receipt." - "I know you're trying to help, but just lending me some money won't do. I need a long-term solution." - "The chicken was overcooked and tough, it won't do for the dinner party tonight." - "I told my boss I would finish the report tomorrow, but he said it won't do and that he needs it today."