WordWeb Online

1. To talk foolishly
   "The two women blithered and crooned at the baby";
   - babble, blather, smatter, blether [UK, dialect]

1. Lacking or showing a lack of due concern
   "spoke with blithe ignorance of the true situation"
    
2. Carefree and happy; not serious
   "was loved for her blithe spirit";
   - blithesome [archaic], lighthearted, lightsome, light-hearted, playful, unserious

Derived forms: blithered, blithering, blithers

See also: cheerful, unconcerned

Type of: blab [informal], blabber [informal], chatter, clack [informal], gabble, gibber, maunder, palaver [informal], piffle, prate, prattle, rabbit [Brit, informal], tattle, tittle-tattle, twaddle [informal], twattle [UK, dialect], vapor [US], vapour [Brit, Cdn], witter [Brit, informal], yabber [Brit, informal], yatter [Brit, informal]

Encyclopedia: Blithe