“Dead as a doornail” is a very old English phrase. It likely grew from the way door nails were hammered flat and made unusable.

Words like “easy peasy” are called rhyming compounds. They use similar sounds to make speech feel playful, catchy, and easy to remember.

Censor means to suppress or remove content. Censure means to strongly criticize or formally condemn someone or something.

“Go belly up” began with the image of a dead fish floating upside down. Today it often means fail, collapse, or go bankrupt.