| In phonology, diphthongs and triphthongs are distinguished from sequences of monophthongs by whether the vowel sound may be analyzed into different phonemes or not. |
| Old Irish had distinctive vowel length in both monophthongs and diphthongs. |
| The language has both monophthongs and diphthongs, and consonants can be voiced or unvoiced. |
| Depending on dialect, English has anywhere from 13 to more than 20 separate vowel phonemes, both monophthongs and diphthongs. |
| Younger women use the monophthongs characteristic of male speech. |
| Diphthongs contrast with monophthongs, where the tongue or other speech organs do not move and the syllable contains only a single vowel sound. |
