Trialist is a term used to describe a person who is undergoing a trial or test for a particular purpose. However, there are several synonyms for the word trialist that can be used to describe the same thing. Some of the synonyms include applicant, candidate, contestant, examinee, interviewee, and aspirant. All these words describe a person who is undergoing a test or a selection process for a particular purpose. For instance, an applicant is someone who has applied for a job, while a contestant is someone competing for a prize or title. The use of synonyms in writing helps to add more variety to the text and make it more engaging for the reader.