The use of the phrase 'plainly stupid' is perfectly acceptable in written English, as long as it is used sparingly. For example, one might write, "The decision to ignore the advice of experienced colleagues was plainly stupid."
Hitching in Africa as a lone young woman was a plainly stupid thing to do.
The denial sounds believable; the rejection of New Orleans strikes us as far more plainly stupid than political.
AT&T is defending this plainly stupid and completely unnecessary restriction as offering customers an "added benefit".
This argument isn't just wrong, it's plainly stupid, and you only have to pay a little bit of attention to see why.
It's not that he's not willing to take risks; it's just that he has a great sense of behaviors that are, whether in the moment or in retrospect, plainly stupid -- and yet many people are willing to engage in patently stupid behavior because they've somehow convinced themselves it's not stupid".
This is plainly rank stupidity.
Time and again, whenever he said something stupid, or crazy, or plainly false, the death knell for his White House run was sounded.
But what Firth plainly doesn't understand is his "fundamentally stupid" exhibition is nothing of the sort; there are numerous Australian artists who have staged exhibitions of text works, in painting, drawing, and sculpture.
Added to which, she has plainly won the hearts and lenses of many of the world's most stupid fashion photographers.
If they didn't always speak with McCainian passion ("This ban on interracial dating is stupid, it's idiotic, and it is incredibly cruel," the Senator said), they spoke plainly enough.
