At MentalFloss.com, I found “12 Old Words that Survived by Getting Fossilized in Idioms.”
I already knew wend (as in “wend your way”) and dint. I am pretty sure I should have known where kith (of “kith and kin”) came from too.
But I didn’t know roughshod, or umbrage, or lurch.
And there are six more…
Learn something new everyday!