Where does “unslack” come from?

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

unslack (English): Not slack

Definitions

  1. Not slack

Ancestry of “unslack”, step by step

unslack traces back through two separate lines of ancestry.

via English slack

StepLanguageWordMeaning
1EnglishslackThe part of anything that hangs loose, having no...
2Middle Englishslak
3Old Englishslæclazy
4Proto-Germanicslakazslack, lax
5Proto-Indo-European(s)leh₁g-weak, feeble; weak, faint

via English un

StepLanguageWordMeaning
1EnglishunOne
Every word from Proto-Indo-European (s)leh₁g-