📒 a person whose job is to act for, or manage the affairs of, other people in business, politics, etc.
📒 a person whose job is to arrange work for an actor, musician, sports player, etc. or to find somebody who will publish a writer’s work
📒 a person who works secretly to obtain information for a government or other organization
📒 a person or thing that has an important effect on a situation
📒 a chemical or a substance that produces an effect or a change or is used for a particular purpose
📒 the person or thing that does an action (expressed as the subject of an active verb, or in a ‘by’ phrase with a passive verb)