| A | B |
| postscript | letter; something that is added after a letter is written |
| postdate | check; to date something after the current date |
| antecedent | boy; to go before others in your family |
| antebellum | United States; the time before war |
| postbellum | anti-slavery; the time after war |
| posthumous | ribbon medal; to be written or spoken about after death |
| posterity | grandmom holding baby; generation after your own |
| antiquity | teepee; generations before your own |
| postpone | thunder & lightening; to place or schedule something after its original plan |
| ante meridiem (a.m.) | roster; before mid-day |
| ante | before |
| post | after |
| obstruct | to build in the way of something |
| offend | to strike up against someone else's ideas or beliefs |
| obstacle | something that stands in the way |
| opponent | a person who is put up against you in a game |
| opposite | something put up against something else |
| offer | to bring something |
| observe | to keep watch over things |
| objection | to react against something |
| obnoxious | when someone causes harm to another |
| occurence | something that comes up |
| ob- | up against, in the way |