Guidelines from the Americans with Disabilities Act National Network for portraying individuals with disabilities "in a respectful and balanced way by using language that is accurate, neutral and objective".

The U.S. Centers for Disease Control and Prevention Preferred Terms for Select Population Groups & Communities.

List of ethnic slurs, ethnophaulisms, or ethnic epithets that are, or have been, used as insinuations or allegations about members of a given ethnicity or racial group or to refer to them in a derogatory, pejorative, or otherwise insulting manner.

The Ofcom Broadcasting Code requires that broadcasters apply "generally accepted standards" to offensive language in programmes, to ensure that material that may cause offence is justified by context and that children are protected from unsuitable material by appropriate scheduling. There are no "banned" words in the Code, and there is no absolute right for viewers not to be offended by language used in TV programmes.

A list of 1,300+ English terms that could be found offensive. The list contains some words that many people won't find offensive, but it's a good start for anybody wanting to block offensive or profane terms on their Site.

List of terms identified by the University of Arizona as having racist histories or meanings.

Guidelines from the UK Government on words to use and avoid when writing about disability.