Dianas are known to sometimes:
-spontaneously create their own words that may not have existed previously
-omit strange sounds with a signature meaning
-attribute new meanings to words
Dianian is simply put the language of Dianas. Once you get close to a Diana, you will easily adapt to the Dianian language.
X: What is that supposed to mean?
Diana: You know, like annoyed, like "rrrraaaah". Duh.
X: OK, you're speaking Dianian again.