# cryptophasia

> English word · Noun

## Definitions
1. The development by twins (identical or fraternal) of a language that only they can understand.

## Etymology
From Ancient Greek κρυπτός (kruptós, “hidden”) + -φασία (-phasía, “speech”) (from φάσις (phásis, “utterance”), from φημί (phēmí, “I speak”)). Equivalent to crypto- + -phasia.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/cryptophasia