blithe

adjective3

1. •
   Cheerful, happy.

   • And now sweet Emperour be blithe againe, And bury all thy feare in my deuises. — 1588
2. •
   Casually careless or indifferent; showing a lack of concern; nonchalant.

   • She had a blithe disregard of cultures outside the United States.
3. •
   (no longer used) Fair, beautiful, comely; gracious, pleasant and attractive in manner.

   • Thy garters fringed with the golde, And siluer aglets hanging by, Which made thee blithe for to beholde, And yet thou wouldst not loue me. — 1878