BROTHER NBRETHREN
I would guess the initial N here is a typo
DIE DICE
Yes, valid for the gaming piece. The etymology appears to be fairly complex.
GOOSEFOOT GOOSEFOOTS
It's a plant and has nothing to do with feet per se, so why not?
JUGER JUGERA
Latin with a Latin plural.
LANDSMAN LANDSLEIT
Yiddish (as pointed out by Keiva) but cf. German Mann, man and Leute, people.
MGANGA WAGANGA
Looks like a Bantu grammar. M+root, singular, WA+root, plural
MONGOOSE MONGOOSES
Got nothing to do with geese. It's from Marathi or some such language. Standard English plural.
NEVER-WAS NEVER-WERES
Good ole nounification of a verb with pluralizationizing in both forms.
ORNIS ORNIS
Plain ole Latin once again.
PARIES PARIETIES
and again
PENNY PENCE
Pennies, pence both are correct.
PRUTAH or PRUTA PRUTOTH or PRUTOT
Looks Hebrew to me. Sounds good by me.
RUBAI RUBAIYAT
Now we talking Arabic or summat like that, I ain' gone argue wit nobody about this one.
SHTETL SHTETLACH
Yiddish again. I almost think we got something other than just plural here. Shtetlach sounds like maybe it means a collection of cities rather than just a straight plural.
ULCUS ULCERA
Latin again. I'd say fourth declension neuter.
VILA VILY
?????
WOMAN WOMEN
Oh, c'mon. You can't be having a problem with this.
WUNDERKIND WUNDERKINDER
Standard German plural for Kind. cf. Eng child, children.
