"wonderfully cool" is a correct and usable phrase in written English.
You can use it to describe something that is very pleasing and admirable. For example, "The fresh mountain air was wonderfully cool."
I shall feel wonderfully cool.
That's a wonderfully cool piece of play from Jiracek.
It's a wonderfully cool comic performance that avoids the temptations of sitcom pandering.
I sleep with my screenless windows open on these wonderfully cool nights.
The whole programme, available on the BBC website, shows his wonderfully cool taste in music, as well as his calmness in dealing with his interviewer Sue Lawley's taunts about communism.
Other appealing appetizers included thick slabs of tender grilled calamari "steaks"; three taquitos, the crisp tortillas wrapping a filling of wonderfully cool fresh tuna, avocado and salsa, an inspired Mexican-Japanese combination; and delectable, slightly smoky, grilled octopus scented by fresh oregano.
Cold vegetarian summer rolls are wonderfully cooling, while green papaya salad is fiery yet refreshing.
But sipped slowly, through chips of ice, the sweetened condensed milk gives ca phe sua da a mellow, caramel flavor, and makes it a wonderfully cooling drink on a summer afternoon.
(That adjective, "cool," is wonderfully placed).
Matvejeff, cool and wonderfully centred throughout, was the perfect foil for her abandoned extravagance.
I wish I had a dollar for every time I pulled into my driveway and broke into tears because I was like, "Is this going to work?" When you work for people your entire life, the idea of being able to do whatever you want, to be your own boss is a really cool and wonderfully freeing thing.
