Assertion: diphthong's vowel | /r/HasProperty | double
Facets:
Source sentences:
text: However, English is a language known for being full of diphthongs (double vowels) that are represented by combinations of symbols.
text: In Finnish, diphthongs are considered phonemic units, contrasting with both doubled vowels and with single vowels.
text: To put it simply: a monophthong is a single vowel and a diphthong is a double vowel.
text: To put it simply: a monophthong is a single vowel and a diphthong is a double vowel.