supercolossal

adjective

su·per·co·los·sal ˌsü-pər-kə-ˈlä-səl

: extremely colossal : of extraordinarily large or astonishing size or degree

Eventually, a similar fate may await most monster galaxies. At one point in the distant future, the cluster members will slowly merge together into only a few supercolossal galaxies that will end up dominating the cosmos.—

Andrew Fazekas

An undertaking this enormous requires help on the production end, though, and the coffee giant has found just the appropriately supercolossal bottling conglomerate to lend a hand …—

Clint Rainey

… those too young to understand the supercolossal charisma and appeal of the tragic Marilyn herself …—

Rex Reed