| A | B |
|---|
| retro- | back |
| post- | after |
| pre- | before |
| ante- | before |
| inter- | between |
| retroactive | go back and apply something |
| retrospective | a look backward over someone's life |
| retrofit | go back and add or change parts |
| postpone | to do it after originally planned |
| postscript | message added after signature |
| posthumous | after death |
| antecedents | person or thing came before |
| antechamber | small room leading into bigger room |
| antedate | to put an earlier date |
| intervene | to come between |
| intermediary | one who comes between two other people |
| interject | add something to a conversation by interrupting |
| prescience | knowing before |
| prejudicial | judging before knowing something or someone |
| precaution | safety measure taken before an activity |
