con·trib·u·to·ry /kən-'tri-byə-ˌtōr-ē/ adj1: characterized by or making contributions to a common fund or enterprise; specif: of, relating to, or being an employee benefit plan to which both employers and employees make contributions2: helping to bring about an end or resultcontributory infringement
Merriam-Webster’s Dictionary of Law. Merriam-Webster. 1996.
accessory, additional, aiding, assisting, auxiliary, beneficial, conducive, contributing, determining, helpful, helping, influential, instrumental, lending assistance, salutary, secondary, tributary, useful
associated concepts: contributory cause, contributory negligence
ancillary (auxiliary), beneficial, donative, gratuitous (given without recompense), instrumental, purposeful, subservient
Burton's Legal Thesaurus. William C. Burton. 2006
A person liable to contribute to the assets of a company on its winding up and every past and present member of the company, subject to certain exceptions to protect the principle of limited liability. Contributories tend to be shareholders who have not paid for their shares in full and members of unlimited companies.The term is defined by statute (see section 79, Insolvency Act 1986) and judicial interpretation (see, for example, Re Chesterfield Catering Co Ltd  Ch 373).
Practical Law Dictionary. Glossary of UK, US and international legal terms. www.practicallaw.com. 2010.