| One-time N.Y. political boss | 28 |
| One-time Nair competitor | 24 |
| One-time Naples currency | 24 |
| One-time nickel treats | 22 |
| One-time Nintendo rival | 23 |
| One-time orchard spray | 22 |
| One-time Perle of society | 25 |
| One-time Pontiac muscle cars | 28 |
| One-time presidential hopeful | 29 |
| One-time presidential inits. | 28 |
| One-time Purina partner | 23 |
| One-time queen of Spain | 23 |
| One-time Reagan co-star | 23 |
| One-time Red giant (abbr.) | 26 |
| One-time rival of Hogan | 23 |
| One-time rival of Pan Am | 24 |
| One-time Rod Serling series | 27 |
| One-time rulers of Tunis | 24 |
| One-time runway model Banks | 27 |
| One-time Russian council | 24 |
| One-time Salem activity | 23 |
| One-time senator from MO | 24 |
| One-time shuttle destination | 28 |
| One-time Sinclair rival | 23 |
| One-time special prosecutor | 27 |
| One-time spendables in Rome | 27 |
| One-time spokesman Fleischer | 28 |
| One-time Sting operation? | 25 |
| One-time Swedish statesman | 26 |
| One-time talk show host Crane | 29 |
| One-time talker O'Donnell | 29 |
| One-time Time critic James | 26 |
| One-time Toronado maker | 23 |
| One-time towel, perhaps | 23 |
| One-time Tunisian rulers | 24 |
| One-time Turkish governors | 26 |
| One-time Turkish title | 22 |
| One-time U.S. alliance | 22 |
| One-time Venetian coin | 22 |
| One-time video game sensation | 29 |
| One-time Wall St. watchdog | 26 |
| One-time White House nickname | 29 |
| One-time wife of Mickey | 23 |
| One-time Wimbledon winner | 25 |
| One-time word processors | 24 |
| One-time Yankees manager | 24 |
| One-time Yugoslav chief | 23 |
| One-time Yugoslav leader | 24 |
| One-touch phone feature | 23 |
| One-trillionth: Comb. form | 26 |
| One-twelfth of a gross | 22 |
| One-twelfth of the AA program | 29 |
| One-twentieth of a shekel | 25 |
| One-twentieth of an old franc | 29 |
| One-twentieth of MMMXX | 22 |
| One-two part, sometimes | 23 |
| One-upmanship on the set | 24 |
| One-volume encyclopedia range | 29 |
| One-way street sign symbol | 26 |
| One-word bird in a poem | 23 |
| One-word Built to Spill song | 28 |
| One-__: uninterrupted play | 26 |
| One-___ (kid's game) | 24 |
| One-___ (kids' game) | 24 |
| One-___ (like a cyclops) | 24 |
| One-___ (old ball game) | 23 |
| One-___ victory (rout) | 22 |
| One-___, children's game | 28 |
| Oneida Community founder | 24 |
| Oneida's county seat | 24 |
| Oneidas, Senecas, et al. | 24 |
| Oneirocritics' field | 24 |
| Ones "over there" | 27 |
| Ones a mother hen mothers | 25 |
| Ones above military heads | 25 |
| Ones added to the payroll | 25 |
| Ones administering CPR, often | 29 |
| Ones among the coop populace | 28 |
| Ones at home on the range? | 26 |
| Ones at the feeding trough | 26 |
| Ones at the gate, maybe | 23 |
| Ones at the helm, essentially | 29 |
| Ones at the pole positions? | 27 |
| Ones attracted to flames | 24 |
| Ones banned from their homes | 28 |
| Ones being grilled, maybe | 25 |
| Ones bet on by bettors | 22 |
| Ones blowing in the wind | 24 |
| Ones born before Virgos | 23 |
| Ones born in late July | 22 |
| Ones breaking up clods | 22 |
| Ones carrying an apostle? | 25 |
| Ones caught in a maze? | 22 |
| Ones charging reading fees? | 27 |
| Ones close to le coeur | 22 |
| Ones close to the heart? | 24 |
| Ones closely packed in | 22 |
| Ones concealing their aims | 26 |
| Ones concerned with color | 25 |
| Ones concerned with custody | 27 |