THRIVE definition: 1. to grow, develop, or be successful: 2. to grow, develop, or be successful: 3. to grow…. Learn more. The meaning of thrive . Definition of thrive . Best online English dictionaries for children, with kid-friendly definitions, integrated thesaurus for kids, images, and animations. Spanish and Chinese language support available The meaning of THRIVE is to grow vigorously : flourish. How to use thrive in a sentence. Thrive means to grow vigorously or to be successful. Learn how to use this verb in different contexts, such as plants, animals, children, or businesses, with synonyms and translations.