1. The act of polishing something insufficiently or not thoroughly enough
The under-polishing of the stone left visible scratches on its surface.
O polimento insuficiente da pedra deixou arranhões visíveis em sua superfície.
2. Failing to refine or improve something adequately, particularly in writing, presentation, or performance
Critics noted the under-polishing of the manuscript before publication.
Os críticos observaram o polimento insuficiente do manuscrito antes da publicação.