| 1 | English | grounds | plural of ground; Basis or justification for... |
| 2 | English | ground | The surface of the Earth, as opposed to the sky... |
| 3 | Middle English | ground | ground; Earth |
| 4 | Old English | grund | ground; bottom, foundation; abyss, depths |
| 5 | Proto-Germanic | grunduz | ground, foundation |
| 6 | Proto-Indo-European | gʰrem- | to be angry; to sound, bellow, growl, roar, be... |
| 7 | Proto-Indo-European | gʰer- | to rub; to stroke; to grind |