Where does “speedless” come from?

speedless (English) comes from English Speed, from Middle English sped, from Old English spēd, from Proto-West Germanic spōdi, from Proto-West Germanic spōan, from Proto-Germanic spōaną, from Proto-Indo-European spéh₁-, from Proto-Indo-European speh₁- — to succeed, to prosper.

speedless (English): Lacking success or prosperity; not prosperous;...

Definitions

  1. Lacking success or prosperity; not prosperous;...

Ancestry of “speedless”, step by step

speedless traces back through two separate lines of ancestry.

via English Speed

StepLanguageWordMeaning
1EnglishSpeedThe state of moving quickly or the capacity for rapid motion
2Middle Englishspedgood fortune
3Old Englishspēdsuccess; luck, prosperity, success
4Proto-West Germanicspōdihurry, rush; success, prosperity
5Proto-West Germanicspōanto succeed, prosper
6Proto-Germanicspōanąto prosper, succeed, be happy
7Proto-Indo-Europeanspéh₁-to succeed, to prosper
8Proto-Indo-Europeanspeh₁-to succeed, to prosper

via Middle English spedles

StepLanguageWordMeaning
1Middle Englishspedles

Words derived from “speedless

Every word from Proto-Indo-European speh₁-Every word from Proto-Indo-European spéh₁-Every word from Proto-Germanic spōaną