Covered with grime; dirty or soiled with accumulated dirt or soot.
From grime (noun: dirt), past participle grimed. Grime likely comes from Old Norse or Germanic sources, originally meaning 'mask' or 'smut,' later applied to actual dirt.
Industrial London was so grimed with coal soot that Victorian buildings turned black within decades—but when the Clean Air Act eliminated coal smoke in the 1960s, many buildings were carefully cleaned and revealed original pale stone underneath.
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