| Source of sink suds | 19 |
| Source of silver | 16 |
| Source of silky wool | 20 |
| Source of sign shine | 20 |
| Source of sibilance | 19 |
| Source of Siamese supplies | 26 |
| Source of showroom shock? | 25 |
| Source of shoots | 16 |
| Source of shavings | 18 |
| Source of shale oil | 19 |
| Source of shade | 15 |
| Source of sexual dysfunction? | 29 |
| Source of Seoul food | 20 |
| Source of self-satisfaction | 27 |
| Source of security | 18 |
| Source of secret cables | 23 |
| Source of secondhand goods | 26 |
| Source of scores | 16 |
| Source of school stress | 23 |
| Source of scandium | 18 |
| Source of Scandinavian mythology | 32 |
| Source of sauce or milk | 23 |
| Source of sauce | 15 |
| Source of saturated fat | 23 |
| Source of sap | 13 |
| Source of Samson's strength | 31 |
| Source of salad greens | 22 |
| Source of sake | 14 |
| Source of sage advice | 21 |
| Source of Russian news | 22 |
| Source of running water | 23 |
| Source of rump roast | 20 |
| Source of ruin | 14 |
| Source of rubber | 16 |
| Source of royal insomnia | 24 |
| Source of roughage | 18 |
| Source of Roquefort cheese | 26 |
| Source of roof noise | 20 |
| Source of roe | 13 |
| Source of rocks? | 16 |
| Source of Rockefeller's wealth | 34 |
| Source of Rockefeller wealth | 28 |
| Source of Rockefeller money | 27 |
| Source of rings | 15 |
| Source of riches | 16 |
| Source of revelations | 21 |
| Source of retiree income | 24 |
| Source of retiree funds | 23 |
| Source of restrictions | 22 |
| Source of resin | 15 |
| Source of remorse on a course | 29 |
| Source of reminiscence | 22 |
| Source of relief? | 17 |
| Source of relief after heavy dinners at the palace? | 51 |
| Source of relief | 16 |
| Source of regret, perhaps | 25 |
| Source of refills | 17 |
| Source of red or white | 22 |
| Source of rectangular lettuce? | 30 |
| Source of ready money | 21 |
| Source of rays | 14 |
| Source of raspberries, perhaps | 30 |
| Source of rare metals, maybe | 28 |
| Source of radio waves | 21 |
| Source of quotes, for short | 27 |
| Source of quote | 15 |
| Source of quotation | 19 |
| Source of quick cash, briefly | 29 |
| Source of quick cash | 20 |
| Source of pumice | 16 |
| Source of pulpwood and turpentine | 33 |
| Source of pulpwood | 18 |
| Source of protein | 17 |
| Source of profitable success | 28 |
| Source of problems | 18 |
| Source of pride | 15 |
| Source of pricey peanuts | 24 |
| Source of pressure, perhaps | 27 |
| Source of pressure, often | 25 |
| Source of pressure, maybe | 25 |
| Source of pressure, at times | 28 |
| Source of pressure for bicyclists | 33 |
| Source of pressure | 18 |
| Source of precedents | 20 |
| Source of power for many boats | 30 |
| Source of power for horticultural equipment? | 44 |
| Source of power | 15 |
| Source of potent buttons | 24 |
| Source of possible harm | 23 |
| Source of Popeye's strength | 31 |
| Source of pop-ups? | 18 |
| Source of poop that gets scooped? | 33 |
| Source of pollution | 19 |
| Source of political support | 27 |
| Source of poi | 13 |
| Source of pink applesauce | 25 |
| Source of PIN money? | 20 |
| Source of PIN money | 19 |
| Source of pigs' knuckles? | 29 |
| Source of peyote | 16 |