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definitions

rhathymia

[ruh-thahy-mee-uh]
noun
  1. carefree behavior; light-heartedness.

Origin of rhathymia

< Greek rhāithȳmía easiness of temper, amusement, indifference, equivalent to rhā́ithȳm(os) easy-going + -ia -ia
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018