Interpres is a 32-bit app, which Apple will no longer support in macOS High Sierra.  I am unable to update Interpres so that it will continue to work.  Instead, I recommend this website:

Thank you to everyone who has written to me over the years.  I'm happy that I was able to help so many.

Updated for Lion!

A Latin-English dictionary and more...

Interpres is a GUI wrapper for the open-source Latin-English dictionary/translator/parser (and English-Latin dictionary) WORDS written and maintained by William Whitaker, which leverages Mac OS X's powerful technologies to deliver an improved user experience.

Click here to download Interpres 1.4.1 (works with Lion, may work with Snow Leopard and below).  This version includes a minor fix for words with long outputs.  Thanks to Fr. John Lawrence M. Polis, FI, for his help with this.

Click here to download Interpres 1.3.

Please contact me with questions, comments, suggestions, problems, &c.