difficult to work or manipulate; "unwieldy rules and regulations"
difficult to use or handle or manage because of size or weight or shape; "we set about towing the unwieldy structure into the shelter"; "almost dropped the unwieldy parcel"
consisting of great mass; containing a great quantity of matter; "Earth is the most massive of the terrestrial planets"
imposing in size or bulk or solidity; "massive oak doors"; "Moore's massive sculptures"; "the monolithic proportions of Stalinist architecture"; "a monumental scale"
imposing in scale or scope or degree or power; "massive retaliatory power"; "a massive increase in oil prices"; "massive changes"
being the same substance throughout; "massive silver"