WikiRhymer has about 1,000 rhyming words and phrases for "happier" starting with...

#{t(page[:type] + "_def")}
Nappier
    #{t(page[:type] + "_def")}
    barrier
      carrier
        Charrier
          rapier
            Napier
              flashier
                Brashier

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                  #{t(page[:type] + "_def")}
                  barrier
                    carrier
                      Charrier
                        flashier
                          Brashier
                            handier
                              Skandia

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                                #{t(page[:type] + "_def")}
                                #{t(page[:type] + "_def")}
                                burp
                                  chirp
                                    slurp
                                      twerp
                                        usurp
                                          Earp
                                            Hjerpe
                                              Antwerp
                                                chirps
                                                  usurps

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                                                    Click here to "Go Pro"