diphthongoid

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noun

A vowel that is midway between a monophthong and a diphthong.

Scrabble 23
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Meanings

noundiphthongoid (plural diphthongoids)

plural diphthongoids

  1. A vowel that is midway between a monophthong and a diphthong.

Origin

From diphthong + -oid.

Full word history & related roots →
Cite this entry
APA

diphthongoid. (n.d.). In WatkinsX Dictionary. Retrieved November 2, 2026, from https://dictionary.watkinsx.com/word/diphthongoid

MLA

“diphthongoid.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/diphthongoid. Accessed November 2, 2026.

Chicago

WatkinsX Dictionary, s.v. “diphthongoid,” accessed November 2, 2026, https://dictionary.watkinsx.com/word/diphthongoid.

Source: diphthongoid on Wiktionary, CC BY-SA 4.0.