from The Century Dictionary.
- To harass with toil.
- To execute with too much care.
from the GNU version of the Collaborative International Dictionary of English.
- transitive verb To cause to labor excessively; to overwork.
- transitive verb To labor upon excessively; to refine unduly.
Sorry, no etymologies found.
Conservatives are, not to overlabor the obvious, marginalized in the cultural elite, even though they are powerful in the political elite.