mas·sive 
/ˈmæsɪv/ adjective
/ˈmæsɪv/ adjective [more massive; most massive] 1 : very large and heavy
▪ The fort had massive walls. ▪ massive furniture ▪ the dog's massive head/jaw ▪ stars more massive than the sun 2 a : large in amount or degree
▪ A massive effort will be required to clean up the debris. ▪ You can find a massive amount of information on the Internet. ▪ The stunt received massive publicity. ▪ a massive collection of baseball cards
b : very severe
▪ a massive heart attack ▪ a massive stroke
▪ The fort had massive walls. ▪ massive furniture ▪ the dog's massive head/jaw ▪ stars more massive than the sun
▪ A massive effort will be required to clean up the debris. ▪ You can find a massive amount of information on the Internet. ▪ The stunt received massive publicity. ▪ a massive collection of baseball cards
b : very severe
▪ a massive heart attack ▪ a massive stroke
— mas·sive·ly adverb
▪ a massively built structure ▪ a massively popular actor [=an extremely popular actor]
▪ a massively built structure ▪ a massively popular actor [=an extremely popular actor]
— mas·sive·ness noun [noncount]
▪ the castle's sheer massiveness
▪ the castle's sheer massiveness
