Synonyms of 'captain'
1 leaderDictionary, boss, master
He is a former English cricket captain.
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Your boss is the person in charge of the organization or department where you work.
He cannot stand his boss.
gaffer (informal , British)
big cheese (old-fashioned , slang)
numero uno (informal)
Mister Big (slang , US)
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.
Thesaurus for captain from the Collins English Thesaurus
In the army, navy, and some other armed forces, a captain is an officer of middle rank.