/ Dictionary / Index R rhathymia: Meaning and Definition of Find definitions for: rha•thy•mi•a Pronunciation: (ru-thī'mē-u), [key] — n. carefree behavior; light-heartedness. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. rhatany r.h.b. Related Content Daily Word Quiz: clairvoyant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language