If you’re curious about the specific case of “ask,” it’s very interesting. www.arrantpedantry.com/2016/03/28/t...
arrantpedantry.com
The Taxing Etymology of Ask
A couple of months back, I learned that task arose as a variant of tax, with the /s/ and /k/ metathesized. This change apparently happened in French before the word was borrowed into English. That …