intermediary

/ˌɪntərˈmiːdiˌɛri/
noun
  1. A person or organization that acts as a link or go-between to help two sides communicate or reach an agreement.
    • The lawyer served as an intermediary between the two companies during the contract negotiations.
    • When buying a house, a real estate agent often acts as an intermediary between the buyer and seller.
    • The United Nations sent an intermediary to help resolve the conflict between the two countries.
adjective
  1. Acting as a link or go-between; involving an intermediate stage or agent.
    • The intermediary step in the experiment required mixing the two chemicals slowly.
    • The bank played an intermediary role in the transfer of funds.
    • They used an intermediary service to process the online payments.
Antonyms
What does "intermediary" mean? | whatsthatwordmean | whatsthatwordmean