Synonyms for the term "alkali waste" refer to various expressions denoting the byproducts or remnants of alkaline substances. These terms include "alkaline residue", which portrays the remaining substances after an alkaline activity or reaction. Another alternative is "alkali byproduct", expressing the waste materials resulting from the use or production of alkaline compounds. Additionally, "alkaline waste" is a phrase frequently employed to describe the residues left over from alkaline processes. These synonyms help broaden the vocabulary used to describe the harmful or unused substances produced by alkaline substances, offering more precise language choices to convey their nature or origin.