Someone who is happy has feelings of pleasure, usually because something nice has happened or because they feel satisfied with their life. Marina was a confident, happy child. I'm just happy to be back running. Her face relaxed into a happy smile. Happy is a feeling of joy, pleasure, or good fortune — exactly how you'd feel if you learned that you won the lottery or got accepted into your number one choice of colleges. HAPPY meaning: 1. feeling, showing, or causing pleasure or satisfaction: 2. (used in greetings for special…. Learn more. Definition of happy adjective in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more. The meaning of HAPPY is enjoying or characterized by well-being and contentment. How to use happy in a sentence. Synonym Discussion of Happy. HAPPY definition: 1. feeling, showing, or causing pleasure or satisfaction: 2. (used in greetings for special…. Learn more. Happy is an emotional and mental state characterized by feelings of joy, contentment, pleasure, and satisfaction. It refers to a positive and upbeat state of mind, often accompanied by smiles, laughter, and a sense of fulfillment or well-being. Happy is a feeling of joy, pleasure, or good fortune — exactly how you'd feel if you learned that you won the lottery or got accepted into your number one choice of colleges. Some common synonyms of happy are fortunate, lucky, and providential. While all these words mean meeting with unforeseen success, happy combines the implications of lucky and fortunate with stress on being blessed. Delve into the multifaceted meaning of happy. Our glossary entry provides clear definitions, historical etymology, common usage examples, and related word forms.