To make dirty, soil, or toil excessively; to cover with dirt or sweat from hard work.
From 'be-' (prefix) + 'moil' (from Old French 'moillier', from Latin 'mollis', meaning soft, originally meaning to work wet soil). The prefix intensifies the meaning of becoming soiled.
The word 'moil' itself means to work hard or churn about—'bemoiled' laborers were not just working but were thoroughly dirty and exhausted from their toil, capturing the full degradation of manual labor.
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