massive

imposing in size or bulk or solidity; "massive oak doors"; "Moore's massive sculptures"; "the monolithic proportions of Stalinist architecture"; "a monumental scale"

being the same substance throughout; "massive silver"

imposing in scale or scope or degree or power; "massive retaliatory power"; "a massive increase in oil prices"; "massive changes"

consisting of great mass; containing a great quantity of matter; "Earth is the most massive of the terrestrial planets"