θάρρος

Etymology: From Ancient Greek θάρσος (tharsos), meaning courage or confidence. The word is related to the verb θαρρέω (tharréo) meaning 'to be confident' or 'to have courage'. This root appears in English words like 'thrasonic' (boastful) from the character Thraso in ancient comedy. The theta-rho combination is distinctively Greek and helps identify the word's ancient origins. The double rho (ρρ) in modern Greek often indicates ancient Greek sigma (σ) that became rho through sound changes.