Where does “frostlessness” come from?

frostlessness (English) comes from English frostless, from English less, from Middle English les, from Old English lēas, from Proto-Germanic *laus.

frostlessness (English): Absence of frost

Definitions

  1. Absence of frost

Ancestry of “frostlessness”, step by step

frostlessness traces back through two separate lines of ancestry.

via English frostless

StepLanguageWordMeaning
1EnglishfrostlessWithout frost
2EnglishlessTo a smaller extent or degree; comparative form...
3Middle Englishlesfalse; lying; deceptive; falsehood; a lie
4Old Englishlēasfalse, lax; false, void, loose; devoid of, loose...
5Proto-Germanic*laus

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-Germanic *laus