The Word Robot Was Born in a Czech Play, Thanks to a Painter Brother

Most words creep into a language slowly, and nobody can say exactly when they arrived. Robot is different. We know where it was born, roughly when, and even whose idea it was. It first appeared in a play, and it went from a theatre in Czechoslovakia to almost every language on Earth in only a few years.

The play was R.U.R., short for Rossum's Universal Robots, written in 1920 by the Czech writer Karel Čapek. It tells of a factory that manufactures artificial workers and sells them around the world. Čapek needed a name for these workers. His first idea was labori, from the Latin word for work. He was not happy with it, and he asked his brother Josef, a painter, for advice.

Josef suggested roboti. It came from the Czech word robota, which means forced labour or drudgery, the heavy, tiresome work that peasants once owed to a landlord. Robota itself descends from an old Slavic word for servitude, and it has relatives across the Slavic languages. Russian readers will recognise it at once: it is the same root as rabota, the ordinary Russian word for work.

The robots in the play were not the metal machines we imagine today. Čapek described them as made from synthetic organic matter, built with chemistry and biology rather than cogs and wires, so similar to people that they could be mistaken for them. The clanking, bolted-together robot with glowing eyes came later, from films and science fiction magazines that borrowed the word and changed the picture.

The play opened in January 1921 and was a hit. An English translation appeared the same year, a production in New York in 1922 ran for 184 performances, and by 1923 the play had been translated into some thirty languages. Everywhere it went, the new word went with it. English kept it as robot, Russian as robot, written in Cyrillic, Spanish as robot, and it has stayed in all of them ever since, with robotics, robotic and a whole family of descendants.

How do we know all this, when the origins of most words are a matter of guesswork? Because this one has a paper trail. The play is dated, its performances were reviewed and recorded, and Karel Čapek himself wrote, years later, that the word was his brother's invention rather than his own. It is one of the rare cases where the birth of a word can be pinned to a particular person and a particular conversation.

There is a small irony in it, too. The word that now stands for the future, for clever machines and space rovers and factory arms, is built on one of the oldest and plainest ideas there is: someone having to do the hard work. Every time English, Russian and Spanish speakers say robot, they are quietly using an old Czech word for a long, tiring day.