Had a word refused? Want to add it to the WWF dictionary?

Well it's not that easy! This is what you could do:
You could go to their website and post a message. http://newtoy.zendesk.com/requests/anonymous/new
You could go to their Facebook page. On FB search wordswithfriends
You could contact Kelly Skoorc (you should see her on their FB page) She works for WWF

Be aware that Scrabble uses the SOWPODS dictionary which has 100,000 words more than the WWF dictionary which is *"based" on the ENABLE dictionary!

They have tried to omit many family unfriendly words although some are still accepted.

In any case three bits of advice:

1 Most "add a word requests" are ignored. Only the obvious omissions are accepted.
2 Don't expect them to add obscure words
3 Don't hold your breath.

Here is an extract from their website:

Word Not Accepted
The dictionary for Words With Friends contains many common nouns, verbs, adverbs, prepositions, conjunctions, interactions, and adjectives. Words that are formally used with a capitalized first letter, words that are usually considered "proper" nouns, are not included in the dictionary. We apologize for any inconvenience this may have caused you.

Here is the ENABLE dictionary (note*)
This app is also useful as it has the revised list. http://www.jzlabs.com