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entity go
that which is perceived or known or inferred to have its own distinct existence (living or nonliving)

physical entity go
an entity that has physical existence

causal agent, cause, causal agency go
any entity that produces an effect or is responsible for events or results

operator, manipulator
an agent that operates some apparatus or machine

noun.person

11 Subcategories

company operator go
an operator who works for a company
driver go
the operator of a motor vehicle
elevator operator go
an operator of an elevator
engineer, locomotive engineer, railroad engineer, engine driver go
the operator of a railway locomotive
hoister go
an operator of a hoist
jockey go
an operator of some vehicle or machine or apparatus
motorman go
the operator of streetcar
radio operator go
someone who operates a radio transmitter
switchman go
a man who operates railroad switches
telegrapher, telegraphist, telegraph operator go
someone who transmits messages by telegraph
telephone operator, telephonist, switchboard operator go
someone who helps callers get the person they are calling