Translation guide
A pinky swear is a promise made by interlocking little fingers, often between children or close friends. In Japanese, the act is called 指切り (yubikiri), and it is accompanied by a well-known rhyme. This guide covers how to refer to the act, how to propose it, and the cultural context.
Referring to the gesture itself or the promise made by interlocking pinkies.
The standard word for a pinky swear. Literally 'finger cut-off', it refers to the promise and the gesture. Often used with する (to do).
When I was a child, I often did pinky swears.
You must never break a pinky swear.
The first part of the traditional pinky swear rhyme. Often said while linking pinkies. The full rhyme continues with '嘘ついたら針千本飲ます' (if you lie, you must swallow a thousand needles).
The children said, 'Pinky swear, if you lie, you must swallow a thousand needles!'
The full traditional rhyme. It is well-known but mainly used by children or in a playful context.
She laughed and said, 'Pinky swear, if you lie, you must swallow a thousand needles.'
How to suggest doing a pinky swear with someone.
Using the concept of a pinky swear to emphasize a serious promise, even if you don't actually link fingers.
Can be used metaphorically to mean 'make a solemn promise.'
This is just between us. Let's pinky swear.
A 'pinky-swear promise,' emphasizing that it's a very serious promise, often used playfully among adults.
Do not translate 'pinky swear' literally as 小指の誓い (koyubi no chikai) or similar. The natural term is 指切り (yubikiri).
The pinky swear rhyme is deeply ingrained in Japanese childhood culture. The threat of swallowing a thousand needles is a traditional, exaggerated punishment for breaking a promise. Adults may use it jokingly.
We made a pinky swear.
Do you remember our pinky swear?
This is a pinky-swear promise, so don't you ever forget it.