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piece-of-cake

/ˌpiːs.əvˈkeɪk/
Idiom
idiom

Something that is very easy to do. You say this when a task takes little effort or skill, and anyone could do it without much trouble.

  • The math test was a piece of cake.
  • Don't worry — setting up the app is a piece of cake.
  • For her, speaking in public is a piece of cake.

Adinary Nuance

The idiom's power comes directly from its origin: eating a slice of cake is not just easy — it's pleasant, requiring zero exertion and delivering instant reward. When Ogden Nash wrote "life's a piece of cake" in 1936, he was reaching for exactly that sense of effortless enjoyment. WWII RAF pilots borrowed it for missions with no resistance, which gave it a breezy, almost boastful flavour that still echoes today — saying something is "a piece of cake" often implies a mild confidence, not just neutral ease. This origin explains why the phrase feels slightly warmer and more colourful than plain synonyms like "easy" or "simple."

In other languages

Vietnamese
dễ như chơi
Spanish
pan comido
Chinese
小菜一碟
Japanese
朝飯前
Korean
식은 죽 먹기

Etymology

The phrase traces to American English in the 1930s, appearing in Ogden Nash's 1936 poem "Primrose Path," where "life's a piece of cake" evoked effortless comfort. British RAF pilots widely adopted it in World War II to describe easy flying missions, cementing its place in everyday English on both sides of the Atlantic.

Common phrases

It's a piece of cakeThat was a piece of cakeMake it look like a piece of cakeSounds like a piece of cake

Synonyms

Related words

Frequently asked questions

Is 'piece of cake' formal or informal?
It is informal. Use it freely in casual speech and friendly messages, but avoid it in formal reports, academic writing, or professional emails where plain words like 'straightforward' or 'simple' work better.
Do I need to say 'a piece of cake' or can I drop the article?
You always need the article. The correct form is 'a piece of cake.' Saying 'it was piece of cake' sounds unnatural and incomplete to native English speakers.
Can 'piece of cake' be used sarcastically?
Yes, absolutely. If you say 'Oh sure, climbing Everest is a piece of cake' in a heavy or exaggerated tone, it means the opposite — the task is actually very hard. Context and tone make the sarcasm clear.
What is the difference between 'piece of cake' and 'a breeze'?
'A breeze' suggests something moves along smoothly and quickly. 'A piece of cake' puts more emphasis on the task requiring almost no skill or effort at all. In most everyday sentences they are interchangeable, but 'piece of cake' sounds slightly more confident and colourful.