The idiom "piece of cake" is used to describe something as very easy or simple to accomplish. It likely originated from the idea that eating a piece of cake is enjoyable and requires little effort. The phrase has been in use in English since the early 20th century and has become a popular way to express how easy a task is.

What is the origin of the idiom "piece of cake" and when to use it?

英語での「piece of cake」の定義と意味

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