If:
Then:
Example:
| وَوَاصِلُ | → | أَوَاصِلُ |
| وُوَيْصِلٌ | → | أُوَيْصِلٌ |
When a wāw carries ḍammah or kasrah at the start of a word, or ḍammah in the middle, it may be replaced by a hamzah.
When wāw and yāʾ combine in one word under set conditions, the wāw becomes yāʾ and the two merge with tashdīd.
When wāw or yāʾ falls at the end of a word after an alif zāʾidah, it is converted to a hamzah.
When a wāw or yāʾ falls in the ʿayn position of an active participle whose verb is muʿtal, it converts to hamzah.
