| One with pressing business? | 27 |
| Org. with complex schedules | 27 |
| Org. with an April deadline | 27 |
| Org. that seeks your return | 27 |
| Org. that gets many returns | 27 |
| Original subway line in NYC | 27 |
| Original N.Y.C. subway line | 27 |
| Osiris' wife and sister | 27 |
| One of the Carolines: Abbr. | 27 |
| One of six musical brothers | 27 |
| Oil and vinegar alternative | 27 |
| Onetime Ethiopia colonizers | 27 |
| One end of the Bernina Pass | 27 |
| One may be next to a bullet | 27 |
| One of Simpson's judges | 27 |
| Often-misspelled possessive | 27 |
| Often-mispunctuated pronoun | 27 |
| One of Clinton's titles | 27 |
| Old artificial leg material | 27 |
| Obsolete piano key material | 27 |
| One of a one-two, sometimes | 27 |
| Official gemstone of Alaska | 27 |
| One of Agatha's sleuths | 27 |
| One of the filmmaking Coens | 27 |
| Odds-and-ends storage areas | 27 |
| Old mentor in an 1893 story | 27 |
| One of the Hawaiian Islands | 27 |
| One tapped for a fraternity | 27 |
| One of the Boyers of summer | 27 |
| Ones that are strung along? | 27 |
| One bent while genuflecting | 27 |
| One of Charlie's Angels | 27 |
| Opening action in billiards | 27 |
| Owner of an Ayrshire estate | 27 |
| One of Clark's co-stars | 27 |
| Operated using a light beam | 27 |
| One may be passed or broken | 27 |
| One of two ballroom dancers | 27 |
| One at the top of the board | 27 |
| Old-fashioned water conduit | 27 |
| One resting against a stake | 27 |
| One way to tackle a hurdle? | 27 |
| One expressing joy, perhaps | 27 |
| Old western actor Van Cleef | 27 |
| One who's a real sucker | 27 |
| Offensive facial expression | 27 |
| One of four, on most tables | 27 |
| Oahu florist's creation | 27 |
| One who might gain interest | 27 |
| Order of ___ (bygone award) | 27 |
| O'Brien's successor | 27 |
| O'Brien is on after him | 27 |
| One of the Little Einsteins | 27 |
| Ostracized one in the Bible | 27 |
| One of Dinah's avengers | 27 |
| One with his pants on fire? | 27 |
| One whose pants are on fire | 27 |
| One who breaks a court oath | 27 |
| One given to tergiversation | 27 |
| Ones with burning britches? | 27 |
| One who'll always be in | 27 |
| One may be spotted in a gym | 27 |
| Old Banca d'Italia unit | 27 |
| One-time spendables in Rome | 27 |
| One of Darrow's clients | 27 |
| Old-time movie mogul Marcus | 27 |
| Old name in film production | 27 |
| O.K. for the diet-conscious | 27 |
| Opera house seating section | 27 |
| One of Sherlock's tools | 27 |
| Online display of amusement | 27 |
| One unlikely to collaborate | 27 |
| Old card game with forfeits | 27 |
| One thing to rate a date on | 27 |
| Ontario's official bird | 27 |
| One of 10 leapers in a song | 27 |
| One of Judy's daughters | 27 |
| One of DonaldÂ’s nephews | 27 |
| Org. for women on the links | 27 |
| Omaha Beach lander, briefly | 27 |
| One photocopier tray: Abbr. | 27 |
| One getting an inspiration? | 27 |
| One of the Redgrave sisters | 27 |
| Old ewe in "Babe" | 27 |
| Old phone company sobriquet | 27 |
| Olympic skiers' surname | 27 |
| One of "the help" | 27 |
| Object of a knightly rescue | 27 |
| Opposite of "bon" | 27 |
| Orange Julius locale, often | 27 |
| One of the Berenstain Bears | 27 |
| One of TV's Brady girls | 27 |
| Ohio city north of Columbus | 27 |
| One of three Dutch painters | 27 |
| One-room schoolhouse figure | 27 |
| Old-fashioned schoolteacher | 27 |
| Oscar-winning Borgnine film | 27 |
| Oscar-winning Borgnine part | 27 |
| On-the-playing-field animal | 27 |
| One leading a bull session? | 27 |