mediator

noun

me·​di·​a·​tor ˈmē-dē-ˌā-tər 

1

: one that mediates

especially : one that mediates between parties at variance

2

: a mediating agent in a physical, chemical, or biological process

Synonyms

• broker
• buffer
• conciliator
• go-between
• honest broker
• interceder
• intercessor
• intermediary
• intermediate
• interposer
• middleman
• peacemaker

Examples of mediator in a Sentence

if you two cannot resolve this argument on your own, we'll have to bring in a mediator

Recent Examples on the Web

Read more on the Israel-Hamas war and its U.S. fallout: Qatar is re-evaluating its role as mediator in cease-fire talks between Israel and Hamas, citing concerns that its efforts are being undermined by politicians seeking to score points, its prime minister said. —Elizabeth Robinson, NBC News, 18 Apr. 2024

But attempts by international mediators to bring home the remaining hostages have failed. —Melanie Lindman, Wafaa Shurafa, arkansasonline.com, 1 Apr. 2024

The latest proposal, which came from a third-party mediator on March 21 and was rejected by the union, offered the nurses a 13% raise between now and October 2026, with 3% at ratification, 4% in October 2024, another 4% in October 2025 and 2% in October 2026. —Grace Hase, The Mercury News, 1 Apr. 2024

Qatar is one of the leading mediators attempting to secure a deal, along with the U.S. and Egypt. —NBC News, 4 Apr. 2024

Smith said some community mediators did not have a positive perception of the police. —Kamal Morgan, Fort Worth Star-Telegram, 3 Apr. 2024

Any judge, jury, mediator or arbitrator will resist rewarding your contentious uncle’s campaign of deception. —Pat Kapowich, The Mercury News, 23 Mar. 2024

The carrier has been in on-and-off conflicts with labor unions over pay, and the two sides have called in a mediator to end the disruptions, particularity as the busy travel Easter travel season beckons. —Benedikt Kammel, Fortune Europe, 21 Mar. 2024

Hamas gave mediators a new proposal for a three-stage plan that would end the fighting, according to two Egyptian officials, one who is involved in the talks, and a second who was briefed on them. —Samy Magdy, The Christian Science Monitor, 16 Mar. 2024

Word History

First Known Use

14th century, in the meaning defined at sense 1

Kids Definition

mediator

noun

me·​di·​a·​tor ˈmēd-ē-ˌāt-ər 

: one that mediates

mediatory

-ē-ə-ˌtōr-ē

-ˌtȯr-

adjective

Medical Definition

mediator

noun

me·​di·​a·​tor ˈmēd-ē-ˌāt-ər 

: one that mediates

especially : a mediating agent (as an enzyme or hormone) in a chemical or biological process

substance P, a neuropeptide mediator of analgesic stimuli in peripheral sensory nerves

—D. R. Robinson

Legal Definition

mediator

noun

me·​di·​a·​tor ˈmē-dē-ˌā-tər 

: one that works to effect reconciliation, settlement, or compromise between parties at variance compare arbitrator