What are the common words with markedly US-UK sounds?

corollary

Sure

here

Lieutenant - a very clear difference there. In this one the American version is more logical, on the face of it.

Harass or harassed - but this one is less clear cut, as many Brits (mainly the English) do use the American style, placing the stress on the second syllable rather than the first. I prefer the latter, which is the more usual pronunciation here in Scotland.

stupid

Lever, detail.

In standard Estuary english, there's a peculiar way of pronouncing the 'tu' sound. For example, Tuesday is pronounced Chewsday.
Attitude - Atchichood
Stupid - Schewpid
Youtube - Youchube

chance

Indubitably (spelt the same, pronounced a wee bit differently?)

Sanatorium (I think the Americans spell it differently?)

Veterinary surgeon - Veterinarian does not exist in British English (for simplification sake the common usage is, of course, vet. Praise be.....)

Estuaryisation in England (especially)has had an effect on the way words are pronounced, as has been illustrated two posts back. Choosedee (for Tuesday) is the norm, pretty much, and whatever day of the week it is, nobody prounounces the "day" bit as such......it's invariably Sun'dee, Mun'dee, Choose'dee, Wenz'dee, Thurs'dee, Frid'ee, Sattur'dee (or, more likely, Sa(h)'uh-dee)....the "t" goes the way of all Estuary "Ts", and that goes for our Scottish version too.

Does that mean the "day" pronunciation is disappearing in British English, Damian?