Master the word "VIABLE" in English: definitions, translations, synonyms, pronunciations, examples, and grammar insights - all in one complete resource. Viable definition: capable of living.. See examples of VIABLE used in a sentence. Discover the meaning of 'viable', explore its usage in everyday language, popular idioms, and fun facts that make this word fascinating. Perfect for learners and curious minds! Definition of viable adjective in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.