The phrase "anything but constructive" is correct and usable in written English.
It can be used to describe feedback, comments, or actions that are not helpful or beneficial in a given context.
Example: "The criticism I received was anything but constructive; it only made me feel worse about my work."
Alternatives: "not helpful" or "counterproductive".
One western diplomat reacted to the formation of the new quartet by repeating the West's oft-expressed view that "Iran's part would be anything but constructive".
Constructive engagement, as the Reagan Administration's quiet coaxing of South Africa's white-minority Government is called, was buttressed last week with criticism that may have seemed anything but constructive in Pretoria.
Unleashing such a sham has proved to be anything but constructive, because like the Wakefield article, its publication in a prominent journal is frequently cited by activists as presumptive validation of its spurious conclusions.
"Sure," he sneered," we'll go back and check our homework again". Moynihan now says he won't accept anything but "constructive criticism". Here's some "constructive criticism," Mr. Moynihan: Stop illegal foreclosures.
But it was so powerful to me because it said in two words what I have found to be very effective in 20 years of client work — that you can't give feedback to clients in anything but a constructive fashion.
By attributing these misdeeds to "others" as well, Rouhani seeks to neutralize his regime's record of being anything but a "constructive" actor internationally.
Of course, since the ones doing the yelling are interested not in doing anything constructive, but rather obstructing legislation they don't approve of (healthcare reform), yelling may be more effective than one would normally assume.
It never helped to solve any actual problems, or do anything constructive, but it wasn't until years later that I finally figured out how to protect myself from its unwanted presence.
By the middle of the decade he was juxtaposing neon lights with umbrellas and old raincoats: he may have managed to break down the traditional "dichotomy between art and life", as Celant put it, but did not immediately offer anything more constructive.
But they didn't say anything about constructive criticism, and I'm good at that".
He had strong but constructive opinions.
