| perpendicularly |
| picky(careless, unstable, unreasonable, unpredictable, changeable) |
| prodigal(free, wild, wanton) |
| punchy(careless, unstable, unreasonable, unpredictable, changeable) |
| queer(careless, unstable, unreasonable, unpredictable, changeable) |
| quirky(careless, unstable, unreasonable, unpredictable, changeable) |
| rash(adjective, free, careless, wild, extravagant) |
| reciprocally |
| reckless(adjective, free, careless, wild, extravagant) |
| recurrent(unreliable, uneven, variable, erratic, random) |
| ride and tie(expression, idiom) |
| right and left(adverb, place, everywhere, anywhere, all-over) |
| round and round(expression, idiom) |
| seesaw |
| shaky(unreliable, uneven, variable, erratic, random) |
| sheerly |
| shifting(unreliable, uneven, variable, erratic, random) |
| shuttlewise |
| spasmodic(unreliable, uneven, variable, erratic, random) |
| spendthrift(adjective, free, careless, wild, extravagant) |