burnt to a cinder

burn (someone or something) to a cinder

1. To burn something, typically when cooking it, to the extent that it is completely charred and blackened. I forgot about the bread I'd put in the oven and burned it to a cinder.
2. To burn someone severely (typically referring to sunburn). Often used in passive constructions. If you lay on the beach all day without any sunscreen, you'll get burned to a cinder.
See also: burn, cinder, to
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.

burnt to a cinder (or crisp)

completely burnt through, leaving only the charred remnant.
See also: burnt, cinder, to
Farlex Partner Idioms Dictionary © Farlex 2017
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References in classic literature ?
The King screamed aloud in agony, and when his wife, the Snow-daughter, who had taken refuge from her brother in the next room, hurried to him, the King lay dead on the ground burnt to a cinder. When the Snow-daughter saw this she turned on her brother and flew at him.
we shall be burnt to a cinder; we were baked through long ago.' So she took the bread-shovel and drew them all out.
we shall be burnt to a cinder; we were baked through long ago,' cried the loaves as before.
Once Jean adjusts to the gentle ebb and flow of daily life at the home and rebuilds bridges that were burnt to a cinder, she rediscovers her passion for performance.
Devizes fire station commander Philip Flowers said of the culprit: "It was either burnt to a cinder or it escaped through a small hole in the corner of the shed, but I imagine it perished and went to bunny heaven."
Last summer one of my neighbours was working a night shift and he came back to find his car gone and van burnt to a cinder.'
Nobody was hurt but everything in my bag was burnt to a cinder.
"Some post in the box was burnt to a cinder but as all the incidents have been late at night, not much post has been in the box."
MANY years ago, when I first started carrying a donor card, it was because I didn't like the alternative of my organs being eaten by worms or burnt to a cinder.