Definition of intense adjective in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more. intense meaning, definition, what is intense: having a very strong effect or felt very...: Learn more. What does intense mean? Learn the meaning of intense and its definition. Understand what intense means, get detailed explanations, usage examples, and discover the meaning of intense in different contexts. INTENSE meaning: 1. extreme and forceful or (of a feeling) very strong: 2. Intense people are very serious, and…. Learn more.