free from words, phrases or tones that reflect prejudiced, stereotyped or discriminatory views of particular people or groups.
It is also language that doesn't deliberately or inadvertently exclude people from being seen as part of a group.
Use gender-neutral language i.e. room attendant not cleaning lady. Pronounce names and key words correctly, don’t use slang, don’t use jargon, be respectful use terms such as Mr. /Mrs. and don’t use Christian names until directed by the person otherwise or ask permission.