What is another word for testifier?
Pronunciation: [tˈɛstɪfˌa͡ɪ͡ə] (IPA) 
Testifier is a word used to describe someone who testifies in a court of law or is a witness to an event. However, there are other words that can be used to describe a testifier. One such word is deponent, which refers to a person who testifies under oath in a legal proceeding. A witness is another synonym for a testifier, someone who has firsthand knowledge of an event. Another term that can be used to describe a testifier is a declarant, which means someone who makes a statement or declaration in a legal or official capacity. Lastly, a claimant is another word that can be used to describe a testifier, especially if they are testifying in regards to a claim or allegation.
