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
An active power or cause or substance; something (e.g. biological, chemical, thermal, etc.) that has the power to produce an effect
The participant of a situation that carries out the action in this situation, e.g. "the boy" in the sentences "The boy kicked the ball" and "The ball was kicked by the boy".
Someone who works for an intelligence agency
A cheat who is assisted by dishonest casino staff.
In the client-server model, the part of the system that performs information preparation and exchange on behalf of a client or server. Especially in the phrase “intelligent agent” it implies some kind of autonomous process which can communicate with other agents to perform some collective task on behalf of one or more humans.
A person who looks for work for another person
The act or manner of playing upon musical instruments; performance.
The dynamic analysis of a program's performance and behaviour, usually by injecting profiling code into it.
On a vehicle, dashboard gauges monitoring engine functions and performance, along with other essential functions.
The act of using or adapting as an instrument; a series or combination of instruments.
The arrangement of a musical composition for performance by a number of different instruments; instrumental composition; composition for an orchestra or military band.