Can I get rid of red letter pluralization that automatically populates new pages
I think Yakimas is improper. She is Yakima. They are Yakima. I went to pray with the South Fork Yakima tribe. I went to pray with the South Fork Yakima. But if you look at all of the different bands of the Yakima, you might say that there are indeed, through history and time, different forms of the the Yakima[s].[?]Geof Bard 19:36, 26 February 2011 (UTC)
"Yakimas" seems to see some usage, however. [1] There are some usages in that selection of "Yakima" as the plural of "Yakima" too.
If you want to specify that it has two plural forms like antelope, you can use {{en-noun|pl=antelope|pl2=antelopes}}. For more sophisticated things, you could use, for example, {{en-noun|pl='''moose''', (''chiefly humorous'') '''[[meese]]''', (''dated, rare'') '''[[mooses]]'''}}.
Hope this helps.