made-upcipher
nounUK /ˌmeɪdʌpˈsaɪfə/
US /ˌmeɪdʌpˈsaɪfər/
A made-upcipher is a secret code that someone invents just for fun.
The kids wrote a made-upcipher to pass notes in class.
RELATED WORDS
OTHER MEANINGS
2. A code that is not real and exists only in a story.
The spy in the book used a made-upcipher to hide the treasure map.
3. A silly or playful way of writing letters that only friends understand.
We made a made-upcipher with squiggles for every letter.
4. A pretend language used in a game.
During the game, they spoke in a made-upcipher so no one could guess their plan.