| Singsong delivery: Abbr. | 24 |
| Sings, at the station? | 22 |
| Sings, as to an infant | 22 |
| Sings with frequent breaks? | 27 |
| Sings with closed mouth | 23 |
| Sings with a closed mouth | 25 |
| Sings or dances, for example | 28 |
| Sings lustily while fishing? | 28 |
| Sings like Rudy Vallee | 22 |
| Sings like Nat King Cole | 24 |
| Sings like Ethel Merman | 23 |
| Sings like Ella Fitzgerald | 26 |
| Sings like Crosby or Como | 25 |
| Sings like Cab Calloway | 23 |
| Sings like a Soprano-hater | 26 |
| Sings in a 1950s style, say | 27 |
| Sings at a high level? | 22 |
| Sings along without words | 25 |
| Sings above true pitch | 22 |
| Singleton, in Stuttgart | 23 |
| Singles-bar frequenters? | 24 |
| Singles, vees and sawbucks | 26 |
| Singles' final words? | 25 |
| Singles to female singles? | 26 |
| Singles player, briefly | 23 |
| Singles or doubles at Fenway | 28 |
| Singles champ: 1959-60 | 22 |
| Singles champ: 1937-38 | 22 |
| Singles bar pickup strategy? | 28 |
| Singles bar icebreaker | 22 |
| Singles bar habitué? | 23 |
| Singles bar giveaway?: Abbr. | 28 |
| Singles bar acquisition | 23 |
| Singles at the laundromat | 25 |
| Singles among the Pringles? | 27 |
| Singles actor Dillon | 23 |
| Singled out for attention | 25 |
| Singled out as important | 24 |
| Single-stranded molecule | 24 |
| Single-strand molecule | 22 |
| Single-speed bike feature | 25 |
| Single-slab stone monuments | 27 |
| Single-sex house, usually | 25 |
| Single-serving coffee option | 28 |
| Single-serving coffee holder | 28 |
| Single-season home-run king | 27 |
| Single-reed instrument | 22 |
| Single-principle philosopher | 28 |
| Single-principle believer | 25 |
| Single-person, as a band | 24 |
| Single-pan meal of Valencia | 27 |
| Single-named supermodel | 23 |
| Single-named nightclub star | 27 |
| Single-named New Age singer | 27 |
| Single-named New Age musician | 29 |
| Single-named music star | 23 |
| Single-named Irish singer | 25 |
| Single-named folksinger | 23 |
| Single-named folk singer | 24 |
| Single-named alt-rock artist | 28 |
| Single-named 60's singer | 28 |
| Single-named 1950s TV star | 26 |
| Single-minded theorizer | 23 |
| Single-masted sailing vessel | 28 |
| Single-masted sailboat | 22 |
| Single-malt liquor store? | 25 |
| Single-issue publication | 24 |
| Single-foot and others | 22 |
| Single-cut and rat-tail? | 24 |
| Single-celled protozoan | 23 |
| Single-celled protozoa | 22 |
| Single-celled organisms | 23 |
| Single-celled organism: var. | 28 |
| Single-celled organism (Var.) | 29 |
| Single-celled organism | 22 |
| Single-celled microorganism | 27 |
| Single-celled critters (Var.) | 29 |
| Single-celled critters | 22 |
| Single-celled creatures | 23 |
| Single-celled creature | 22 |
| Single-cell protozoans | 22 |
| Single-barreled weapons | 23 |
| Single-and-looking group | 24 |
| Single, in Fenway Park | 22 |
| Single, for one: Abbr. | 22 |
| Single, double, or triple | 25 |
| Single's greenery? | 22 |
| Single's flip side, often | 29 |
| Single __: tournament type | 26 |
| Single __: Olympics event | 25 |
| Single year's record | 24 |
| Single undivided entity | 23 |
| Single serving, like sugar | 26 |
| Single serving of butter | 24 |
| Single season strike-out king | 29 |
| Single rotation period | 22 |
| Single result, perhaps | 22 |
| Single portion of food | 22 |
| Single piece of information | 27 |
| Single piece for a dancer | 25 |