An archaic or variant spelling of 'darksome'; dark and gloomy in an older English form.
A variant or dialectal spelling of 'darksome', showing how English spelling was less standardized before the 18th century. The '-sum' ending is an alternate form of '-some'.
Finding variant spellings like 'darksum' in old texts shows that English spelling was still fluid—we didn't lock down standardized spelling until dictionaries became powerful cultural forces.
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