A design, action, or decision that is clearly incorrect or inappropriate. Often capitalised; always emphasised in speech as if capitalised. The opposite of the Right Thing; more generally, anything that is not the Right Thing. In cases where "the good is the enemy of the best", the merely good - although good - is nevertheless the Wrong Thing. "In C, the default is for module-level declarations to be visible everywhere, rather than just within the module. This is clearly the Wrong Thing."
We live in a washed-out PC world where nobody in government wants to say the wrong thing so they say nothing at all.
I was [making the offer] because building a mosque was the wrong thing to do at the wrong location at the wrong time….
There have been a few incidents in basketball where saying the wrong thing ended up costing people jobs.
The first wrong thing to note here is that Carr appears to have played into the confusion of Sikhs and Muslims.
My first priority as a teenager was doing the wrong thing, and I had to be led back to doing the right thing.
If so, they have expected too much, or have expected the wrong thing.
He was immediately conscious that he had said the wrong thing.
She did not know what to say next, fearing to say the wrong thing, and so to throw away a golden opportunity.
And if you do the wrong thing, you get on the wrong trail, that's all.
It was a wrong thing, and much unhappiness has flowed from it.