Darkness
来自Big Physics
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Old English deorc, of Germanic origin, probably distantly related to German tarnen ‘conceal’.
wiktionary
From Middle English derknesse, from Old English deorcnes; equivalent to dark + -ness.
etymonline
darkness (n.)
Old English deorcnysse "absence of light," from dark (adj.) + -ness. The 10c. Anglo-Saxon treatise on astronomy uses þeostrum for "darkness." Figurative use for "sinfulness, wickedness" is from early 14c. From late 14c. as "obscurity," also "secrecy, concealment," also "blindness," physical, mental, or spiritual.
