6 tones marked with diacritics
Each tone is a distinct diacritic on the vowel; changing tone changes meaning.
| Tone name | Mark | Pitch contour | Example |
|---|---|---|---|
| ngang (flat) | none | mid level | ma |
| huyền (falling) | ` | low falling | mà |
| hỏi (dipping) | ? | dip then rise | mả |
| ngã (broken) | ~ | rising glottal | mã |
| sắc (rising) | ' | high rising | má |
| nặng (heavy) | . | low falling glottal | mạ |
ơ, ư, â, ê, ô, ă change the vowel quality before the tone mark.
c/k/q all = k; d/gi = y (North); r/d/gi vary by dialect.