Here are some words where the ending is pronounced aʊz:
(a)rouse blouse carouse espouse
And here are some where the ending is pronounced aʊs:
douse grouse louse mouse souse spouse
Apparently, the word grouse can also be pronounced ɡruːs, but I have never heard this and don’t recommend it.
The word burnoose/burnous(e) is pronounced bɜːˈnuːs or bɜːˈnuːz.
The word Ouse, the name of several rivers in England, is pronounced uːz.
Thanks to Alex Rotatori for pointing out that spouse can also be pronounced spaʊz.