| passable(adjective, moderate, usual, regular, normal) |
| pedestrian(adjective, dull, simple, plain, stupid) |
| place unknown |
| plain(adjective, dull, weak, simple, flat) |
| plain vanilla(expression, adjective, dull, weak, flat) |
| plebeian(adjective, dull, simple, plain, stupid) |
| poker face(expression, adjective, cool, flat, detached) |
| pole |
| practicable(adjective, simple, clean, plain, ordinary) |
| practical(adjective, simple, clean, plain, ordinary) |
| prose(adjective, simple, clean, plain, ordinary) |
| proser |
| prosy(adjective, dull, bad, simple, flat) |
| remote(adjective, cool, flat, detached, blank) |
| repetitious(adjective, dull, flat, stupid, dead) |
| reserved(adjective, cool, detached, blank, sober) |
| roughly |
| routine(adjective, dull, simple, flat, plain) |
| run of the mill(expression, adjective, idiom, moderate, usual) |
| savorless(adjective, dull, weak, flat, boring) |