contracting party; subscriber; policyholder
Refers to a person or entity that enters into a contract; commonly used in legal, business, and insurance contexts. The specific meaning depends on the type of contract.
The policyholder is obligated to pay the insurance premium.
Subscribers to this service pay a monthly usage fee.
Compound of 契約 (keiyaku, 'contract') + 者 (sha, 'person'). The meaning is transparent from its components.