noun
person who has experienced something; experient
Refers to someone who has personally undergone or lived through a particular event, situation, or condition.
彼はその事故の体験者です。
He is a person who experienced that accident.
体験者の話を聞くと、現実味が増す。
Hearing stories from those who have experienced it makes it feel more real.
Compound of 体験 (taiken, 'personal experience') + 者 (sha, 'person').