Per: https://www.lexico.com/explore/what-words-in-the-english-language-contain-two-u-s-in-a-row
There are several English words containing two consecutive u’s. Most of them came into English from Latin:
vacuum = a space
continuum = a continuous sequence
residuum = a chemical residue
menstruum = the matter discharged during menstruation
triduum = a three-day period of religious observance in the Catholic Church
duumvir = each of a pair of magistrates holding joint office in ancient Rome
duumvirate = a coalition of two people having joint authority
All but the first two words on this list are quite rare, though, or are only likely to be encountered in specialist contexts. There are also a couple of other words containing two u’s in a row that have come into English from other languages:
muumuu = a loose dress of a kind traditionally worn in Hawaii (from Hawaiian)
Weltanschauung = the world view of a particular individual or group (from German)
Excellent! There’s a reason that the letter “w” is called “double-u”, but nowadays the Welsh word “cwm”, meaning a steep and narrow valley, is usually rendered as “combe” or “coomb”. There are probably some other examples, but I’m too lazy to dig them out right now.
Words are fun.
And here I thought "duumvir" meant an especially dumb hysteria over a virus; and
"duumvirate" is the global shadow government that has used a virus to inflict worldwide oppression