The name Happy is a boy's name meaning "joyful".

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Many emotional, virtuous word names are coming back into style, but Happy feels unlikely to be revived. This could be because it doesn't have a solid history of being popularly used (in comparison to Joy) and because it's such a familiarly used word in day to day life (unlike Valor).
 
It was notably borne by the not-so-happy character Happy Loman in Arthur Miller's play Death of a Salesman and by a cat in the anime and manga series, Fairy Tail.

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Happy

The name Happy is a girl's name of English origin meaning "happy, joy".

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5 Letter Girl Names

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Many virtue names have long been in style or have seen a resurgence in recent years. Happy, however joyous, seems unlikely to join this trend. This could be because it doesn't have a solid history of being popularly used (in comparison to Joy or Hope) and because it's such a familiarly used word in day to day life (unlike Verity or Felicity). 
 It was notably borne by the not-so-happy character Happy Loman in Arthur Miller's play Death of a Salesman, by a cat in the anime and manga series, Fairy Tail, and by Happy Quinn from the TV show Scorpion.

Happy

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The name Happy in Nameberry Blog Posts