Latin Declension Question

Factual Questions
1

The MIT motto is mens et manus - “mind and hand”. A student group that I work with wants to use a modified motto, “mind and foot,” for some of their advertising. I believe that this would be mens et pedis, but could someone check if I have the case of pedis correct?

Many thanks.

2

pedis is the genitive singular. You want mens et pes.

3

Hm - for some reason, that looks less appealing. What’s the plural (mind and feet)?

4

Unless it’s irregular (which I doubt), that would be “mens et pedes”.