One who exerts power, or has the power to act / One who acts for, or in the place of, another (the principal), by that person's authority; someone entrusted to do the business of another

A surname.

plural of agent

That behaves like an agent: able to express or expressing agency or control on one's own behalf or on the behalf of another.

(linguistics) Indicating an agent or agency (as -er in lexicographer). / (linguistics) Pertaining to a grammatical agent that performs the action of the verb.

(linguistics) A word having an agentive construction.

plural of agentive

(grammar) In an agentive manner.

(grammar) The state or condition of being agentive.

Working as an agent (one who acts for another).