Bath. Sometimes I pronounce it just like if I pronounce bed.

As for me, I have these following words that I find difficult to pronounce: through, though, to, the, think, thank, getting, body, question, issue and there are a lot of words else that are difficult to pronounce to me. I have some problem whit the word t for some reason...

clothes [-thes], enthusiasm

In my case, sometimes I fail to pronounce English names of people and places correctly. Probably because some are loanwords like brand signatures or wine.

Phenomemon is hard for me to say but it also depends on what type of person you are speaking wise you''ll find that alot of people wether they speak english or not find certain words hard to say.