adjectives
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"
is similar to
entirely of one substance with no holes inside
"a solid block of wood"
imposing in scale or scope or degree or power
"massive retaliatory power"; "a massive increase in oil prices"; "massive changes"
is similar to
above average in size or number or quantity or magnitude or extent
"a large city"; "set out for the big city"; "a large sum"; "a big (or large) barn"; "a large family"; "big businesses"; "a big expenditure"; "a large number of newspapers"; "a big group of scientists"; "large areas of the world"
consisting of great mass; containing a great quantity of matter
"Earth is the most massive of the terrestrial planets"
is similar to
of comparatively great physical weight or density
"a heavy load"; "lead is a heavy metal"; "heavy mahogany furniture"