Backfilling is the process of filling in an excavated area using materials like soil, gravel, or stones. There are several synonyms for backfilling, including refilling, earth filling, back stuffing, and back packing. These terms refer to the process of replacing soil or other materials to level or stabilize a site that has been excavated or disturbed in some way, such as during construction or renovation. Other synonyms can include grading, leveling, and compaction - all of which play a vital role in ensuring that the site remains stable and that structures or other features are properly supported. Whatever term is used, backfilling is a key part of any construction or renovation project.