Synonyms of 'lynchpin'
driving forceDictionary, director, chief
He's the lynchpin of our team.
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The chief of an organization is the person who is in charge of it.
The new leader is the deputy chief of the territory's defence force.
In some organizations and public authorities, the person in charge is referred to as the director.
He is the director of the unit.
Thesaurus for lynchpin from the Collins English Thesaurus