Where does “heatlessness” come from?

heatlessness (English) comes from English heatless, from English heat, from Middle English heten, from Old English hǣtan, from Proto-West Germanic haitijan, from Proto-Germanic haitijaną, from Proto-Germanic -janą, from Proto-Indo-European -yéti — he, she.

heatlessness (English): The state or condition of being heatless; absence...

Definitions

  1. The state or condition of being heatless; absence...

Ancestry of “heatlessness”, step by step

heatlessness traces back through two separate lines of ancestry.

via English heatless

StepLanguageWordMeaning
1EnglishheatlessWithout heat
2EnglishheatThermal energy; The condition or quality of being...
3Middle EnglishhetenAlternative form of hetien
4Old Englishhǣtanto heat; become hot
5Proto-West Germanichaitijanto make hot, heat
6Proto-Germanichaitijanąto make hot, heat
7Proto-Germanic-janąDerives denominatives from nouns and factitives...
8Proto-Indo-European-yétiCreates intransitive, often deponent,...
9Proto-Indo-Europeanyé-
10Chichewaiyehe, she

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 Chichewa iyeEvery word from Proto-Germanic -janąEvery word from Proto-Indo-European -yéti