The term "claimer" is commonly used in the legal and insurance field as someone who makes a claim for compensation or benefits. Some synonyms for "claimer" include "petitioner," "applicant," "assertor," "demander," "suitor," and "plaintiff." These words often imply someone who is seeking something from another party and may have a legal or financial stake in the matter. Additionally, other synonyms for "claimer" can include "protester," "challenger," and "opposer," which suggest a more confrontational tone. Regardless of the connotation, "claimer" and its synonyms indicate an individual who is making a formal request or claim for something.