blithe

 
Pronunciation: /blʌɪð/

adjective

  • showing a casual and cheerful indifference considered to be callous or improper: a blithe disregard for the rules of the road
  • literary happy or carefree: a blithe seaside comedy

Derivatives

blithely

adverb

blitheness

noun

blithesome

Pronunciation: /-s(ə)m/
adjective ( literary)

Origin:

Old English blīthe, of Germanic origin; related to Dutch blijde, also to bliss