That is quite a difficult question.
I think Pneumonoultramicroscopicsilicovolcanoconiosis is a good one just because it is ridiculously long while still being commonly accepted in dictionaries.
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.
I think Pneumonoultramicroscopicsilicovolcanoconiosis is a good one just because it is ridiculously long while still being commonly accepted in dictionaries.