| A | B |
| OB | against |
| obfuscate | (v.): to confuse, bewilder, or stupefy |
| obstinate | (v.): firmly or stubbornly adhering to one's purpose and opinion |
| obstreperous | (adj.): noisy, clamorous, or boisterous |
| obsession | (n.): an uncontrollable and unhealthy desire |
| TEMPOR | time |
| contemporary | (adj.): existing, occurring, or living at the same time; belonging to the same time |
| temporal | (adj.): enduring for a time only; temporary; transitory |
| temporize | (v.): to be indecisive or evasive to gain time or delay acting |
| extemporaneous | (adj.): on the spur of the moment; without premeditation or preparation |
| tempo | (n.): characteristic rate, rhythm, or pattern of work or activity |
| ANT | opposite, against |
| ANTI | opposite, against |
| antagonism | (n.): an active hostility or opposition, as between unfriendly or conflicting groups |
| antidote | (n.): something that prevents or counteracts injurious or unwanted effects; something that counteracts poison |
| antipathy | (n.): a feeling of intense dislike; the object of a feeling of intense dislike; something to be avoided |
| antithesis | (n.): the direct or exact opposite; opposition; contrast |
| antarctic | (adj.): of, at, or near the South Pole |