R is for Robot

robot (noun) : a programmable machine designed to automatically carry out complex tasks. Such a machine is controlled by a computer. Robotic characters have become a staple of science fiction, however robots are now increasingly part of our modern lives.

The word was coined by Czech writer Karel Čapek—and suggested by his brother Josef Čapek—in the 1920 science-fiction play R.U.R. (Rossum's Universal Robots). It derives from the Czech word robota, which translates to "forced labour" or "drudgery".

Calling someone by this name implies they act like a robot; that they are someone who does things in a very effective way but never shows their emotions.