| Source of perspiration | 22 |
| Source of perfection | 20 |
| Source of pep? | 14 |
| Source of pennies | 17 |
| Source of penicillin | 20 |
| Source of patter? | 17 |
| Source of patronage jobs | 24 |
| Source of particular irritation | 31 |
| Source of Pará rubber | 24 |
| Source of paper tigers | 22 |
| Source of paper profits? | 24 |
| Source of Pablo Escobar's wealth | 36 |
| Source of overhead mews | 23 |
| Source of overcompensating bravado | 34 |
| Source of ornamental plumes | 27 |
| Source of orange-red light | 26 |
| Source of omega-3 | 17 |
| Source of oil and food | 22 |
| Source of oil | 13 |
| Source of ocean treasure, perhaps | 33 |
| Source of obsidian | 18 |
| Source of oats | 14 |
| Source of oater drumming | 24 |
| Source of nuclear energy | 24 |
| Source of northern exposure? | 28 |
| Source of nickel | 16 |
| Source of net receipts | 22 |
| Source of needed dough | 22 |
| Source of natural red food coloring | 35 |
| Source of natural light | 23 |
| Source of much West Coast trade | 31 |
| Source of much tea from Asia | 28 |
| Source of much talk | 19 |
| Source of much salon noise | 26 |
| Source of much Military Channel material | 40 |
| Source of much legalese | 23 |
| Source of much Indian tea | 25 |
| Source of much hard wood? | 25 |
| Source of much government history | 33 |
| Source of much family friction | 30 |
| Source of much dorm furniture | 29 |
| Source of much cheap modern furniture | 37 |
| Source of much blonde hair | 26 |
| Source of much bell-ringing | 27 |
| Source of much Asian irrigation | 31 |
| Source of mother-of-pearl | 25 |
| Source of most of the names in "The Lion King" | 56 |
| Source of morning stimulation, maybe | 36 |
| Source of more pay or more play | 31 |
| Source of moos or baas | 22 |
| Source of money that's "spread" in nine puzzle answers | 68 |
| Source of mohair | 16 |
| Source of modern music | 22 |
| Source of models | 16 |
| Source of misgivings | 20 |
| Source of misery | 16 |
| Source of mirth in some cities | 30 |
| Source of mints, at times | 25 |
| Source of milk used for Romano cheese | 37 |
| Source of milk for some cheeses | 31 |
| Source of milk for chèvre | 28 |
| Source of milk | 14 |
| Source of metal | 15 |
| Source of mesons | 16 |
| Source of mescal | 16 |
| Source of martini additives | 27 |
| Source of marine ink | 20 |
| Source of maple syrup | 21 |
| Source of many waves? | 21 |
| Source of many troubles | 23 |
| Source of many tiny animals | 27 |
| Source of many spills | 21 |
| Source of many Sicilian explosions | 34 |
| Source of many shelter dogs (abbr.) | 35 |
| Source of many quotes, for short | 32 |
| Source of many quotations, for short | 36 |
| Source of many patents, briefly | 31 |
| Source of many orders | 21 |
| Source of many old pop songs | 28 |
| Source of many news items | 25 |
| Source of many memories | 23 |
| Source of many English words that come to us via French | 55 |
| Source of many dialogues | 24 |
| Source of many coughs | 21 |
| Source of many computer errors | 30 |
| Source of many clones | 21 |
| Source of many calls | 20 |
| Source of many bills | 20 |
| Source of many a proverb, for short | 35 |
| Source of many a giraffe's meal | 35 |
| Source of many a bead | 21 |
| Source of magic dust | 20 |
| Source of magic | 15 |
| Source of lysergic acid | 23 |
| Source of lunch meats | 21 |
| Source of low-fat meat | 22 |
| Source of low-alcohol wines | 27 |
| Source of low pitches? | 22 |
| Source of low pitches | 21 |
| Source of lots of living-room arm-waving | 40 |