What is another word for being a witness?
Pronunciation: [bˌiːɪŋ ɐ wˈɪtnəs] (IPA) 
Being a witness is a crucial role that is often required in various situations. It may refer to being an observer, an onlooker, a spectator, or a bystander. Other synonyms for being a witness include being a participant, a party, a contributor, or a collaborator. In some cases, being a witness may also be referred to as being an informant, a whistleblower, or a source of information. Whatever the context, being a witness requires one to be truthful, objective and reliable in their testimony. It is a responsibility that must be taken seriously and with utmost professionalism, especially in legal proceedings.
