WordWeb Online

1. Abounding in sap
   "sappy maple trees"; "sappy kindling wood"
    
2. [informal] Effusively or insincerely emotional
   "a sappy novel";
   - bathetic, drippy [informal], hokey [N. Amer, informal], maudlin, mawkish, kitschy, mushy [informal], schmaltzy [informal], schmalzy [informal], sentimental, soppy [Brit, informal], soupy [informal], slushy [informal], cutesy [informal], gooey [informal], corny [informal], weepy [informal], cheesy [informal]

Derived forms: sappiest, sappier

See also: cornball [N. Amer, informal], emotional, juicy, lovey-dovey [informal]

Encyclopedia: Sappy