# monophthong

> English word · Noun · IPA /ˈmɒnəfˌθɒŋ(ɡ)/

## Definitions
1. A vowel (in the sense of a sound rather than a letter of the alphabet) that has the same sound throughout its pronunciation, such as the short vowels in "pap", "pep", "pip", "pop" and "pup", as opposed to a diphthong (eg, /aɪ/, the vowel in "pipe") or a triphthong (eg, /aɪə/, the sound in the non-rhotic pronunciation of "pyre").

## Etymology
From Ancient Greek μονόφθογγος (monóphthongos), from μόνος (mónos, “single”) + φθόγγος (phthóngos, “sound”).

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