Candle-foot is a term used to describe the amount of wax left at the base of an unburned candle. However, there are many synonyms for this word that can be used to describe the same thing. These include terms like "residue," "remnant," "debris," and "lingering wax." Other synonyms for candle-foot might include "stub," "butt," or "end piece." Regardless of the word used, all of these terms describe the leftover pieces of wax that remain after a candle has been burned, and can be helpful when discussing the quality or value of a candle.