The phrase "awful mixture" is correct and usable in written English.
It can be used to describe a combination of elements that is unpleasant or undesirable.
Example: "The party was ruined by an awful mixture of loud music and unruly guests."
Alternatives: "terrible blend" or "dreadful combination".
(And no wonder: they were an awful mixture of Hendrick's gin, yellow Chartreuse and fresh lime juice).
In retrospect, that was one of those choices that reflected the Blair/Brown period's awful mixture of complacency and detachment from reality.
"All of us who worked with Heath on 'The Dark Knight' accept this with an awful mixture of sadness but incredible pride," Mr. Nolan said as he stood in for Mr. Ledger at the Golden Globes, adding, "He will be eternally missed, but he will never be forgotten".
Without such precaution, coatings, although of the appropriate composition, result in an awful mixture of undesired phases and show furthermore considerable concentration gradients that promote corrosion [34].
She describes how he gets hold of her, his awful smell, a mixture of tobacco and onions.
Trump's candidacy, says Singer, is "the most cynical and truly sad thing that's ever happened in my life in this country, and I've lived through assassinations and terrible wars, but that it has led to this – it's a mixture of every awful emotion.
This mixture makes an awful lot of little pancakes, and even I can't eat that many in one sitting, so I suggest freezing what you do not eat.
But mostly he's divisive because his games are a weird mixture of wonderful and awful.
AI's practical side continues to thrive, but its theoretical side has languished after bequeathing a mixture of brilliant and awful ideas to philosophy and cognitive psychology.
From Slimy Stuarts to Groovy Greeks and Awful Egyptians to Gorgeous Georgians, each episode features a mixture of sketches from different ages, plus commentary courtesy of the show's talented host: a talking rat.
Her character, Eva Khatchadourian, is too complicated for pity, projecting a mixture of cold poise and extreme vulnerability that makes her predicament especially awful.
