Select the INCORRECTLY spelt word.

yeild

The incorrectly spelled word is "yeild"

Explanation of all options:

1. Ceiling: Correctly spelled. It refers to the overhead surface that covers a room or structure.

2. Yeild: Incorrectly spelled. The correct spelling is "yield." It means to give way, surrender, or produce something as a result.

3. Grief: Correctly spelled. It represents deep sorrow, sadness, or emotional pain caused by a loss or unfortunate event.

4. Niece: Correctly spelled. It denotes the daughter of one's brother or sister, or the daughter of one's spouse's brother or sister.