棚からぼた餅
tana kara botamochiidiom★Intermediate
informal
An unexpected but pleasant surprise or windfall, often referring to something good that happens without any effort or planning.
棚からぼた餅で、宝くじが当たった。
I got a lucky surprise and won the lottery.
このプロジェクトは棚からぼた餅のような成功だった。
This project was a surprisingly successful windfall.
💡
The idiom literally means 'a mochi cake falling from the shelf,' symbolizing an unexpected benefit.
Synonyms
Antonyms
Related Phrases
天からぼた餅idiom
A similar idiom meaning 'a mochi cake falling from the sky,' emphasizing an even more unexpected or miraculous event.
💡Pro Tip
Usage Context
This idiom is best used for positive, unexpected situations. Avoid using it for negative surprises.
📖Word Origin
The phrase originates from the idea of a mochi cake (botamochi) falling from a shelf (tana) unexpectedly, symbolizing an unplanned but fortunate event.
📝Usage Notes
This idiom is commonly used in everyday conversations to express pleasant surprises or unplanned benefits.
Word Breakdown
棚
shelf
rootぼた餅
mochi cake (a type of traditional Japanese sweet)
root✎ Noted on May 31, 2026JA → EN