"burnt up" is correct and usable in written English.
You can use it to refer to something that has been completely destroyed or consumed by fire. Example sentence: The old barn was burnt up by the raging fire.
Sammy Omar, a worker at the warehouse, told WNBC-TV: "We seen the dog outside all burnt up, the babies all burnt up.
Hell, people'll say, 'Best thing ever happened to Agnes was getting all burnt up at the fetus-puller.
One of the notions they bequeathed to us is that of the youthful poet burnt up in the fire of his own genius.
Gid took a step toward Louis and then said, with a grievous eloquence, "I believe my lungs are all burnt up, Louie.
Prediction: "The blood of the just will be lacking in London, Burnt up in the fire of '66: The ancient Lady will topple from her high place, Many of the same sect will be killed".
"They can fix you right up at the hospital, Miss Agnes.... Hell, people'll say, 'Best thing ever happened to Agnes was getting all burnt up at the fetus-puller.
Cars deal a double blow to the environment, as they not only omit nasty CO2s, but the oil burnt up in their engines is a precious finite fuel source.
And sometimes, the echoing words add up to dense and vivid stanzas: "I speak from the heart of the hood/ From the boarded-up apartments with wood/ From the cracked-down crackhouse/ To the burnt-up black house/ To the fiends inside with that burnt-up glass out".
After all, the bodies of Iranians aren't going to become twisted, burnt-up crisps by themselves, will they?
A guy in my dreams with a burnt-up face and Edward Scissorhands gloves is scary because it's shocking, but Michael Myers got into my subconscious in a way I did not appreciate as a child. .
Supposedly, the newest operating system featured the ability to "interface with your device's radio-baseband allowing it to synchronize with microwave frequencies and use them to recharge your battery". It seems unlikely that many people bought it -- one guy who tweeted this burnt-up iPhone followed up with another tweet suggesting the photo wasn't legitimate.
