| 1 | English | imperialist | Of, or relating to imperialism; An advocate of... |
| 2 | English | imperial | Related to an empire, emperor, or empress;... |
| 3 | Middle English | imperial | Imperial; related to or being of an empire or its... |
| 4 | Old French | imperial | — |
| 5 | Latin | imperiālis | — |
| 6 | Latin | imperium | The empire, state, imperial government, realm,... |
| 7 | Latin | imperāre | — |
| 8 | Latin | parāre | — |
| 9 | Latin | parō | — |
| 10 | Latin | pectus | chest, breast; heart, breast, as the seat of... |
| 11 | Proto-Italic | pektos | — |
| 12 | Proto-Indo-European | peg- | breast |
| 13 | English | polyethylene glycol | Any of a series of water-soluble polymers, of... |