To work at or labor upon; to toil over something; to complete work on something (archaic).
From Latin 'ad-' (to) + 'operari' (to work). The term is essentially obsolete in modern English but appears in historical texts where it means to apply oneself laboriously to a task.
Adoperate is one of those beautiful obsolete verbs that literally means 'to work at'—it disappeared because English speakers just said 'work' instead, but Renaissance scholars loved using Latin-derived words to sound impressive!
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