"uniquely wonderful" is correct and can be used in written English.
You can use it to convey that something is particularly wonderful in a special way. For example, "The sunset last night was uniquely wonderful; it was like a blanket of color in the sky."
Foot says today, "[Mary] was a very grand figure indeed". For Midgley, the war years were a uniquely wonderful time to be a woman studying philosophy at Oxford.
TO READ some of the press comments, Cazenove, a small British investment bank, is a uniquely wonderful institution that displays all of the virtues of the City of old and none of its vices.
Biala was described by her niece, the New York painter Hermine Ford, as a "uniquely wonderful, widely beloved character" whose house in Paris "would fill in the late afternoon with all kinds of people -- writers, artists, next-door neighbors".
Women are, of course, uniquely wonderful, each doubtlessly endowed with traits that would legitimately endear her to colleagues and associates.
Dunst, Caplan and Fisher are all uniquely wonderful in their varying levels of insanity.
There is no way to describe Monroe's writing style other than to say it is uniquely wonderful.
I saw several couples whose expedition equipment comprised Tesco bags and a senior gentleman who was transporting the remains of the family picnic down the mountain in a red tartan shopper – a wonderful and uniquely British sight which I'll call upon in low moments for years to come.
"She recognizes in this wonderful, sort of uniquely feminine way how the human interaction in relationships are vital to social change," Ms. Schiff said.
And whether you are a peach, a grape, an apple, or celery -- YOU are uniquely you, and that is wonderful.
That said, much of it is wonderful, helpful, encouraging and uniquely well-suited to the just-graduated set, who are still trying to get a toehold on their financial lives.
It is also to miss the real point about Ramos, who remains a uniquely exasperating kind of footballing two-face: a wonderful player who can also be wonderfully, unforgivably awful, often at exactly the same time.
