A person who helps a group to have an effective dialog without taking any side of the argument, especially in order to reach a consensus(noun)
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Use "facilitator" in a sentence
"To act as their facilitator is completely deceiving."
"We also had a guest facilitator from the Small Industries Development Organization who came from Mtwara and taught the members how to make peanut butter, jam, nutritious flour, and mango chutney."
"The job of the forum manager or facilitator is to build and maintain a participatory audience by keeping message volume in check and mediating disputes in a fair manner."