Where does “slak” come from?

slak (Middle English) comes from Old English slæc, from Proto-Germanic slakaz, from Proto-Indo-European (s)leh₁g- — weak, feeble; weak, faint.

Ancestry of “slak”, step by step

slak traces back through two separate lines of ancestry.

via Old English slæc

StepLanguageWordMeaning
1Old Englishslæclazy
2Proto-Germanicslakazslack, lax
3Proto-Indo-European(s)leh₁g-weak, feeble; weak, faint

via Old Norse slakki

StepLanguageWordMeaning
1Old Norseslakkia slope

Words derived from “slak”

Every word from Proto-Indo-European (s)leh₁g- →Every word from Proto-Germanic slakaz →Every word from Old English slæc →