Ideographic: A happy 喜 sound 口; 喜 also provides the pronunciationRadical:

meaning for :

  • - laugh
  • - giggle
  • - (interjection expressing admiration, surprise etc)
  • - (interjection expressing surprise, grief etc)
  • - variant of 嘻 grinning
  • - smilingsee 嬉皮笑脸 hip-hop (music genre) (loanword)hee hee
  • - happyhippie (loanword)