| 1 | English | preposterous | Absurd, or contrary to common sense |
| 2 | Latin | praeposterus | reversed, inverted; perverted, distorted; absurd,... |
| 3 | Latin | posterus | following, next, coming after; inferior |
| 4 | Latin | post | behind; after, since, besides, except; behind,... |
| 5 | Latin | poste | ablative singular of postis |
| 6 | Proto-Italic | posti | — |
| 7 | Proto-Indo-European | pósti | — |
| 8 | Proto-Indo-European | pós | afterwards, post; by, at |