Adjectives

(s)massive, monolithic, monumentalimposing in size or bulk or solidity“massive oak doors”, “Moore's massive sculptures”, “the monolithic proportions of Stalinist architecture”, “a monumental scale”
(s)massivebeing the same substance throughout“massive silver”
(s)massiveimposing in scale or scope or degree or power“massive retaliatory power”, “a massive increase in oil prices”, “massive changes”
(s)massiveconsisting of great mass; containing a great quantity of matter“Earth is the most massive of the terrestrial planets”