Definify.com

Webster 1913 Edition

(-sŭm)

Adj.

Cheery; gay; merry.

The

blithesome

sounds of wassail gay.

Sir W. Scott.

–

Blithe′some-ly

adv.

–

Blithe′some-ness

Noun.

Adj.

Gay; merry; cheerful.

blithesome ‎(comparative more blithesome, superlative most blithesome)

happy or spriteful, carefree
- 1908, Kenneth Grahame, The Wind in the Willows
  Take the Adventure, heed the call, now ere the irrevocable moment passes!' 'Tis but a banging of the door behind you, a blithesome step forward, and you are out of the old life and into the new!