Synonyms of 'operator'
1 workerDictionary, hand, driverHe first of all worked as a machine operator.
2 contractorDictionary, dealer, traderthe country's largest cable TV operator
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She is an antique dealer.
A hand is someone, usually a man, who does hard physical work, for example in a factory or on a farm, as part of a group of people who all do similar work.
He now works as a farm hand.
A mechanic is someone whose job is to repair and maintain machines and engines, especially car engines.
I think you should take the car to your mechanic.
grease monkey (informal)
Thesaurus for operator from the Collins English Thesaurus
An operator is a person who connects telephone calls at a telephone exchange or in a place such as an office or hotel .