Where does “llacáu” come from?

llacáu (Welsh) comes from Welsh llac, 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.

llacáu (Welsh): to loosen, to slacken, to relax

Definitions

to loosen, to slacken, to relax

Ancestry of “llacáu”, step by step

Step	Language	Word	Meaning
1	Welsh	llac	slack, loose, lax
2	English	slack	The part of anything that hangs loose, having no...
3	Middle English	slak	—
4	Old English	slæc	lazy
5	Proto-Germanic	slakaz	slack, lax
6	Proto-Indo-European	(s)leh₁g-	weak, feeble; weak, faint

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