How to Delete a Line in MS Word

Delete lines or connectors
Click the line, connector, or shape that you want to delete, and then press Delete.

Tip: If you want to delete multiple lines or connectors, select the first line, press and hold Ctrl while you select the other lines, and then press Delete.

If you can't select a line to delete, it might actually be a horizontal line, which is a type of border.

Remove a horizontal line
1. Place the cursor immediately above the horizontal line.

2. On the Home tab, click the arrow next to the Borders and Shading button, and click No Border.