English definition of “happy”
PLEASED › pleased and in a good mood, especially because something good has happened: I'm glad you've finally found someone who makes you happy. Jean seems much happier now that she's moved out.
happy to do sth › to be willing to do something: I'd be very happy to help, if you need a hand.
SHOWING HAPPINESS › making you feel happy, or expressing happiness: a big, happy smile Did the book have a happy ending?
SATISFIED › satisfied and not worried: Are you happy with your exam results? I'm not very happy about you travelling alone at night.
Happy Birthday/New Year, etc › something friendly that you say to someone on a special day or holiday: Happy Christmas! → Opposite unhappy