Definition of endorse verb in Oxford Advanced Learner's Dictionary. Meaning , pronunciation, picture, example sentences, grammar, usage notes, synonyms and more. Discover everything about the word " ENDORSE " in English: meanings, translations, synonyms, pronunciations, examples, and grammar insights - all in one comprehensive guide. ENDORSE meaning : 1. to make a public statement of your approval or support for something or someone: 2. to appear…. Learn more. ENDORSED definition : 1. past simple and past participle of endorse 2. to make a public statement of your approval or…. Learn more.