What does "idioglossia" mean?

An invented form of dialect, language, or speech used by children, typically twins, and intelligible only to its speakers.

What is a synonym for "idioglossia"?

Common synonyms include: croak, crow, cryptophasia, cryptophasia, dysphasia, falsetto.

Pronounced //ˌɪdioʊˈɡlɑsiə//.

//ˌɪdioʊˈɡlɑsiə// noun

noun ·Rare ·Advanced level

Noun

1
An invented form of dialect, language, or speech used by children, typically twins, and intelligible only to its speakers. countable, uncountable

From idio- + -glossia.

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