From Longman Dictionary of Contemporary Englishmassivemas‧sive /ˈmæsɪv/ ●●●S2W3 adjective 🔊 🔊 1BIGvery large, solid, and heavy 🔊 The bell is massive, weighing over 40 tons. 🔊 the castle’s massive walls► see thesaurus at big2BIGunusually large, powerful, or damaging 🔊 My phone bill was massive last month. 🔊 massive increases in the number of homeless 🔊 Club members can get a massive discount of £50.massive stroke/heart attack etc 🔊 He suffered a massive stroke.massive argument/row etc British English 🔊 I had a massive argument with her.3British English informal extremely good 🔊 Listen to this. It’s a massive song. —massively adverb 🔊 The president was massively popular.