When he decides to turn his fifth grade teacher's love of the dictionary around on her, clever Nick Allen invents a new word and begins a chain of events that quickly moves beyond his control.

One boy’s invented word becomes a phenomenon beyond his control in bestselling and award-winning author Andrew Clements’s hilarious classic children’s story about creative thought and the power of language.

Is Nick Allen a troublemaker? He really just likes to liven things up at school—and he’s always had plenty of great ideas. When Nick learns some interesting information about how words are created, suddenly he’s got the inspiration for his best plan ever…the frindle. Who says a pen has to be called a pen? Why not call it a frindle?

Things begin innocently enough as Nick gets his friends to use the new word. Then other people in town start saying “frindle.” Soon the school is in an uproar, and Nick has become a local hero. His teacher wants Nick to put an end to all this nonsense, but the funny thing is “frindle” doesn’t belong to Nick anymore. The new word is spreading across the country, and there’s nothing Nick can do to stop it.