Regex - Find all matching words that that don't begin with a specific prefix

Question

How would I construct a regular expression to find all words that end in a string but don\'t begin with a string?

e.g. Find all words that end in \'friend\' that don

Answer 1

This may work:

\w*(?

you could also try

\w*(? if you wanted to match words like befriended or boyfriends.

I'm not sure if ? is available in all regex versions, but this expression worked in Expersso (which I believe is .NET).