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English definition of “happy”

happy

adjective (PLEASED)   /ˈhæp·i/
feeling, showing, or causing pleasure or satisfaction: To tell the truth, I’ve never been happier in my whole life. People want movies to have happy endings. [+ (that) clause] I’m happy (that) everything is working out for you. I’ve been very happy with (= satisfied with) the education that my boys have gotten through scouting. Happy is used as a polite way to express your willingness to do something: [+ to infinitive] I’m driving that way and I’d be happy to drop you off at your home. [+ to infinitive] It was no trouble at all – I was happy to be of help. Happy is also used in greetings for special occasions, expressing good wishes: Happy birthday! Happy New Year
(Definition of happy adjective (PLEASED) from the Cambridge Academic Content Dictionary © Cambridge University Press)
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