# sigmatism

> English word · Noun · IPA /ˈsɪɡməˌtɪzəm/

## Definitions
1. A lisp.
2. A defective pronunciation of sibilant sounds.

## Etymology
From sigma + -ism. sigmat- is the stem form of sigma, as seen in sigmatic.

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