Where does “lossful” come from?

lossful (English) comes from English loss, from Middle English lōs, from Old English los, from Proto-Germanic lusą, from Proto-Indo-European lewHs-, from Proto-Indo-European lewH- — louse.

lossful (English): Causing loss or damage; harmful; Lossy; involving...

Definitions

  1. Causing loss or damage; harmful; Lossy; involving...

Ancestry of “lossful”, step by step

lossful traces back through two separate lines of ancestry.

via English loss

StepLanguageWordMeaning
1EnglishlossThe result of no longer possessing an object, a...
2Middle Englishlōsloss
3Old Englishlosloss; destruction
4Proto-Germaniclusąloss
5Proto-Indo-EuropeanlewHs-to cut; sever; loose; lose; to cut loose; sever;...
6Proto-Indo-EuropeanlewH-louse

via English ful

StepLanguageWordMeaning
1Englishful
Every word from Proto-Indo-European lewH-Every word from Proto-Indo-European lewHs-Every word from Proto-Germanic lusą