The commonly accepted plural for corgi is corgis, but if we're to be etymologically accurate, it should be corgwn. This reflects the word's origin; it was borrowed in 1921 from Welsh corci. That was a compound of the words cor, meaning "dwarf", and ci, meaning "dog". Cor traces to the Proto-Brythonic word korr, which is from Proto-Celtic korros ("stunted") and ultimately Proto-Indo-European. Ci, which was pronounced like "key" (the velar stop was voiced after the r) and comes from Proto-Brythonic ki and Proto-Celtic ku, which had the same definition but could also mean "wolf". Finally, that's reconstructed to the Proto-Indo-European root kwon. The term corgi has been increasing in literary usage over time, peaking in the year 1999, and according to Google Trends it's most searched for in Wyoming.
Hello! I'm Adam Aleksic, a sophomore studying government and linguistics at Harvard University, where I co-founded the Harvard Undergraduate Linguistics Society. In addition to etymology, I also really enjoy politics, vexillology, geography, board games, conlanging, and law.