Titanic voltage refers to an extremely high voltage that is used in various industries for powering large machinery or high-intensity lights. If you're looking for synonyms for the term, you can use "high voltage," "mega voltage," "gigantic voltage," or "colossal voltage." Other options can include "enormous voltage," "powerful voltage," "massive voltage," and "ultra-high voltage." These terms can be useful when referring to high voltage power transmission systems that require vast amounts of power to be moved over long distances. They are also useful in scientific fields like engineering and physics, where electrical energy is studied in great detail.