70%RatingSave Gender Masculine Usage Lithuanian Pronounced Pron. kya-STUW-tyis [key·IPA] Meaning & History From Lithuanian kęsti meaning "to cope, to endure" combined with a diminutive suffix. This was the name of a 14th-century ruler of Lithuania. Related NamesFamily Tree·Details DiminutiveKęstas Name DaysName Days? Lithuania: February 21 Categories actions, rulers, strength