Full disclosure: This is just the parts that I find interesting as a more in-depth look at the history of whiskey can be found here.
I guess the logical place to start would be where the word whiskey comes from. Distilled alcohol was known in Latin as “aqua vitae,” which translates to “water of life.” Later translated to Gaelic as “uisge (or uisce) beatha.” The first word meaning water later got anglicized to “whiskey” or “whisky,” depending on what region you live in.
So next time you drink whiskey, remember that you’re drinking the “water of life.”
When thinking of how it should be spelled, it all depends on the region that you are relating it to. Whiskey is common in Ireland and the United States, and whisky is used in all other countries that produce the, “water of life.”