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the claim
Several natural human languages and dialects contain true triphthongs
the verdict
SUPPORTED
the evidence backs this
refutedsupported
the weight of evidence
2 sources for · 0 against

Multiple linguistic and phonetic studies analyzing Romance and Germanic languages document the existence and acoustic properties of triphthongs in natural human languages.

Evidence for · 2
A production account of sound changes affecting diphthongs and triphthongs in Romance
2004 · cited by 1
Paper 10 investigates sound changes affecting diphthongs and triphthongs derived from Latin mid-low vowels in Romance languages.
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The analysis

The claim states that several natural human languages contain true triphthongs. Papers 10 and 11 explicitly discuss triphthongs within specific natural languages (Romance languages and Modern German) and analyze their articulatory or acoustic characteristics. None of the papers refute the claim, leading to a supported verdict.

More for · 1
ACOUSTIC CHARACTERISTICS OF DIPHTHONGS AND TRIPHTHONGS IN MODERN GERMAN
2019 · cited by 1
Paper 11 examines the acoustic characteristics of diphthongs and triphthongs in Modern German.
The paper trail · every fact has a biography
first checked04 Aug 2026
judged → SUPPORTED · 7704 Aug 2026
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