'dark-caused' originates from the combination of 'dark' and 'caused', where 'dark' refers to the absence of light and 'caused' means brought about or produced.

The term 'dark-caused' combines the Old English 'deorc' (dark) and the Middle English 'causen' (cause), eventually forming the modern English compound adjective 'dark-caused'.

Initially, it meant 'caused by the absence of light', and this meaning has largely remained the same in modern usage.