hook above

{{Short description|Diacritical mark}}

{{other uses of|hook|Hook (disambiguation)}}

{{For|the IPA symbol|glottal stop}}

{{Infobox diacritic|char=◌̉

|name=Hook above

|unicode={{unichar|0309|combining hook above|cwith= |html=}}}}

{{Multiple image

|direction=vertical

|align=right

|width=18em

|footer=The hook in Times New Roman (top) and Calibri (bottom)

|image1=Hook (diacritic).svg

|alt1= ̉ ỏổỔ shown in Times New Roman

|image2=Hook (diacritic) in Calibri.png

|alt2= ̉ ỏổỔ shown in Calibri

}}

File:Alexandre de Rhodes - Dictionarium Annamiticum (1651) - c.34 - cropped on bí and bỉ.png's {{lang|la|Dictionarium Annamiticum Lusitanum et Latinum}} (Vietnamese–Portuguese–Latin dictionary) showing {{lang|vi|bí}} without its tittle and {{lang|vi|bỉ}} with both a hook and tittle.]]

In typesetting, the hook above ({{langx|vi|dấu hỏi}}) is a diacritic mark placed on top of vowels in the Vietnamese alphabet. In shape it looks like a tiny question mark without the dot underneath, or a tiny glottal stop (ʔ). For example, a capital A with a hook is "Ả", and a lower case "u" with a hook is "ủ". The hook is usually written to the right of the circumflex in conventional Vietnamese orthography. If Vietnamese characters are unavailable, it is often replaced by a question mark after the vowel (VIQR encoding).

This diacritic functions as a tone marker, indicating a "mid falling" tone ({{lang|vi|hỏi}}): which is "dipping" (˨˩˥) in Southern Vietnamese or "falling" (˧˩) in Northern Vietnamese; see Vietnamese language § Regional variation: Tones. The Southern "dipping" tone is similar to the questioning intonation in English.

The hook above can be used as a tone marker, but is not regarded as part of the alphabet.