Requisitioner is a term used to denote an individual or entity that requests or demands something. However, there are several synonyms that can be used in place of this term. Some of these synonyms include requester, applicant, petitioner, claimant, and supplicant. Requester is a generic term that can be used to denote anyone who demands something. Applicant is more commonly used in job contexts, where individuals apply for a job or a position. Petitioner is used in legal contexts to denote someone who files a petition. Claimant is used in insurance or legal contexts, where individuals make claims for compensation. Supplicant is a more formal term and is often used in religious or prayer contexts to denote someone who is making a request to a higher power.