# SIDS vs sigh

> English confusable word pair

## The two words

### SIDS
*noun · frequency rank #49,048*
Acronym of sudden infant death syndrome.

### sigh
*verb · IPA /saɪ/ · frequency rank #7,742*
To inhale a larger quantity of air than usual, and immediately expel it; to make a deep single audible respiration, especially as the result or involuntary expression of fatigue, exhaustion, grief, sorrow, frustration, or the like.

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