Alas, I'm right!
I tried nicknaming my Pokemon, and my results were:
England > Not accepted
Gland > Not accepted
Glan > Accepted
Land > Accepted
So that means that 'Gland' is the word that is executed.
I don't want to know what it means, so you can look it up if your curious enough.
Hope I helped. :)
Source: "I tried nicknaming my Pokemon"