/ Dictionary / Index B blithesome: Meaning and Definition of Find definitions for: blithe•some Pronunciation: (blī'sum, blīth'-), [key] — adj. lighthearted; merry; cheerful: a blithesome nature. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: blithesome (Thesaurus) blither B.Litt. Related Content Daily Word Quiz: secular Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language