What does "cryptophasia" mean?

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

What is a synonym for "cryptophasia"?

Common synonyms include: idioglossia, idioglossia.

Cryptophasia

noun

noun ·Rare ·Advanced level

Definitions

Noun

1
The development by twins (identical or fraternal) of a language that only they can understand. uncountable
"Whether it's called cryptophasia, idioglossia, autonomous language, or plain ol' twin talk, the secret language among twins has long been a source of fascination to both parents and researchers alike. According to twin statistics ..."

Synonyms

All synonyms

idioglossia idioglossia

Example

More examples

"Whether it's called cryptophasia, idioglossia, autonomous language, or plain ol' twin talk, the secret language among twins has long been a source of fascination to both parents and researchers alike. According to twin statistics ..."

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.