Where does “thirstlessness” come from?

thirstlessness (English) comes from English thirstless, from English thirst, from Middle English thirst, from Old English þurst, from Proto-West Germanic þurstu, from Germanic *þurstuz, from Proto-Indo-European ters- — dry.

thirstlessness (English): Lack of thirst

Definitions

  1. Lack of thirst

Ancestry of “thirstlessness”, step by step

thirstlessness traces back through two separate lines of ancestry.

via English thirstless

StepLanguageWordMeaning
1EnglishthirstlessDevoid of thirst; not thirsty
2EnglishthirstA sensation of dryness in the throat associated...
3Middle Englishthirstthirst; a need of or desire for hydration
4Old Englishþurstthirst
5Proto-West Germanicþurstuthirst
6Germanic*þurstuz
7Proto-Indo-Europeanters-dry

via English Ness

StepLanguageWordMeaning
1EnglishNessAn Ulster princess and the mother of Conchobar mac Nessa and Findchoem in the Ulster Cycle of Irish mythology. Daughter of Eochaid Sálbuide. Also the mother of Cormac Cond Longas by incest with Conchobar mac Nessa
2Middle Englishnesse
3Old Englishnæsnot, not at all; not; first/third-person singular...
4Proto-Germanicnasjąfoothill; headland; cape
5Proto-Indo-Europeannéh₂snose
Every word from Proto-Indo-European ters-Every word from Germanic *þurstuzEvery word from Proto-West Germanic þurstu