Finis and finish both entered English in 1400s. They both ultimately came from Latin, though the etymologists don't say so. And to say a word is derived from Latin and give it
a French pronunication is a bit inconsistent. I have never heard the final "s" pronounced as shown in the dictionaries.)

HEY! Is that today's Word? Your post just made me go look, and sure enough, I didn't get it! Though I did get Mail issue 111. Very strange. Twice in recent months I've not gotten a word; and there was that week when I got an extra!

One of the Great Names in Sports is Fennis Dembo. Fennis and his twin sister, Fenise, were so named by their mother as a declaration that these -- her tenth and eleventh children -- were her last.

http://sportsillustrated.cnn.com/features/1997/weekly/catchingup/1124/

Mercy--I wonder how many times they were called Dennis and Denise?

at 6'6", they probably didn't call him Dennis Fembo more than once...

When will "finis" be finis? If you click on "oday's Word"
at the bottom of the screen,"finis" is for the third time
given as "Today's Word".