| A | B |
| obtain (def.) | to get something |
| obtain (sent.) | I will ___ the CD through the mail. |
| obvious (def.) | easy to see |
| obvious (sent.) | The boy’s smile was _____ from across the room. |
| obscene (def.) | disgusting; indecent |
| obscene (sent.) | He made an ___ gesture when the other driver cut him off on the highway. |
| obnoxious (def.) | very offensive and unpleasant |
| obnoxious (sent.) | The girls actions were ___ and rude. |
| obsolete (def.) | not used anymore; out of date |
| obsolete (sent.) | The cassette tape is becoming ___. |