moderator
noun
mod·er·a·tor
ˈmä-də-ˌrā-tər 
plural moderators
1
: someone who presides over an assembly, meeting, or discussion: such as
a
: the chairman of a discussion group
b
: a person who administers an online forum, chat room, or group
c
: the nonpartisan presiding officer of a town meeting
d
: the presiding officer of a Presbyterian governing body
2
: one who arbitrates : mediator
3
: a substance (such as graphite) used for slowing neutrons in a nuclear reactor
Synonyms
Examples of moderator in a Sentence
The moderator allowed audience members to ask the governor questions.
She acts as the moderator in our office meetings.
Recent Examples on the Web
The moderator accused me of being pro-Nazi, banned me permanently for life, and deleted all my past posts from the 'comics' subreddit.
—
Dan Perry, Newsweek, 31 Jan. 2025
The moderators noted that while many F1 journalists have migrated to alternative platforms like Bluesky, teams and drivers have yet to make the transition.
—Esat Dedezade, Forbes, 22 Jan. 2025
Reddit users will recall that when moderators were recently viewed by Reddit as breaking Reddit rules at scale (by making subreddits read-only or private in protest of Reddit’s new API access rules and pricing), Reddit responded by removing moderators that refused to re-open protesting subreddits.
—Ars Technica, 22 Jan. 2025
The View cohosts – sans moderator Whoopi Goldberg who was out for a previous work commitment – dove right into the new Trump era, dissecting yesterday’s Inauguration and pondering what the next four years will look like.
—Greg Evans, Deadline, 21 Jan. 2025
See all Example Sentences for moderator 
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Dan Perry, Newsweek, 31 Jan. 2025
The moderators noted that while many F1 journalists have migrated to alternative platforms like Bluesky, teams and drivers have yet to make the transition.
—Esat Dedezade, Forbes, 22 Jan. 2025
Reddit users will recall that when moderators were recently viewed by Reddit as breaking Reddit rules at scale (by making subreddits read-only or private in protest of Reddit’s new API access rules and pricing), Reddit responded by removing moderators that refused to re-open protesting subreddits.
—Ars Technica, 22 Jan. 2025
The View cohosts – sans moderator Whoopi Goldberg who was out for a previous work commitment – dove right into the new Trump era, dissecting yesterday’s Inauguration and pondering what the next four years will look like.
—Greg Evans, Deadline, 21 Jan. 2025
See all Example Sentences for moderator
Dictionary Entries Near moderator
Cite this Entry
“Moderator.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/moderator. Accessed 16 Feb. 2025.
Copy CitationKids Definition
moderator
noun
mod·er·a·tor
ˈmäd-ə-ˌrāt-ər
1
: one that moderates: as
a
: the leader of a Presbyterian governing body
b
: the chairperson of a town meeting
c
: the chairperson of a discussion group (as on television)
2
: a substance (as graphite) used for slowing down neutrons in a nuclear reactor
Medical Definition
moderator
noun
mod·er·a·tor
ˈmäd-ə-ˌrāt-ər
: a substance (as graphite, deuterium in heavy water, or beryllium) used for slowing down neutrons in a nuclear reactor
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