| 1 | Italian | gruppo | group, cluster, party, team, covey; pack; peloton |
| 2 | Vulgar Latin | cruppo | — |
| 3 | Renaissance Latin | grupus | — |
| 4 | Proto-Germanic | kruppaz | a body; mass; a compressed, round mass; lump;... |
| 5 | Proto-Indo-European | grewb- | to warp, bend, crawl; to bend, crouch, crawl; to... |
| 6 | Proto-Indo-European | ger- | to turn, bend, twist, wind; to tie, bind... |