What Is the Plural of Prius?

It’s a serious question. When a made-up word for the English-speaking market sounds Greek or Latin, how does one pluralize it?

Okay, it’s not a serious question. I think we have at least a few possibilities:

1. Priuses (for English-only speakers)


2. Prii


3. Priae

This came to my mind earlier this evening as I was walking down to La Bodega Estrella for a bottle of chardonnay. In front of my building was a Prius about to turn left into its building, while oncoming was another Prius. Both were in electric drive on a residential street so they were totally and completely silent. Except for the headlights you wouldn’t have known there were there. It was eerie. Two cars passing in the night and they were totally silent, not unlike two ships in the night - and the non-metaphorial version of same.