The meaning of MUCH is great in quantity, amount, extent, or degree. How to use much in a sentence. a large amount or to a large degree: 2. a far larger amount of something than you want or need…. much synonyms, much pronunciation, much translation, English dictionary definition of much. more , most Great in quantity, degree, or extent: not ... Use the adjective much to mean "a lot" or "a large amount." If you don't get much sleep the night before a big test, you don't get a lot. If you get too much sleep, you may sleep through your alarm and miss the … much (much), adj., more, most, n., adv., more, most. great in quantity, measure, or degree: too much cake. a great quantity, measure, or degree: Much of his research was unreliable. a great, important, … Definition of much determiner in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more. Learn the meaning and correct usage of "much". Our guide provides clear grammar rules and real-world examples from authoritative sources to help you write with confidence. Apr 9, 2026 · Much is now generally used with uncountable nouns.