See thing is, I talk to a 6 year old as though I know they are going to be looking at getting their…
Erich Nolan Bertussi

Couldn’t agree more. I never dumbed down for my kids and my mother (who also has a PhD) didn’t either. However, like her, when I used expensive ones, I tended to offer a couple simpler synonyms, which further defined my new/exotic/more nuanced semantic choice. As a former ad copywriter, I know simplicity has its place. But so does complexity. And life isn’t binary.