| One rejection after another | 27 |
| One with a lot of paperwork | 27 |
| Official witness, of a kind | 27 |
| Outlaw's rifle décor | 27 |
| One given a staff position? | 27 |
| Org. for straight shooters? | 27 |
| Org. with a lot of heaters? | 27 |
| Org. for those packing heat | 27 |
| Org. concerned with barrels | 27 |
| Org. promoting intelligence | 27 |
| Org. for U.S. cryptologists | 27 |
| Old nuclear watchdog: Abbr. | 27 |
| One of 60 billion in a min. | 27 |
| One high degree or another? | 27 |
| Old telecommunications name | 27 |
| One may be locked in a boat | 27 |
| One makes one Trigger happy | 27 |
| One of Tony's relatives | 27 |
| One blowing among the reeds | 27 |
| Out of use, as words: Abbr. | 27 |
| Oval-shaped wind instrument | 27 |
| One __: kids' ball game | 27 |
| Out Odd Future member Frank | 27 |
| Original Crayola pack, e.g. | 27 |
| One that doesn't belong | 27 |
| Oksana Baiul's hometown | 27 |
| One writing poems of praise | 27 |
| Oxygen doesn't have one | 27 |
| Out of view, at the theater | 27 |
| O'er and o'er again | 27 |
| Old Irish alphabetic system | 27 |
| One concerned with figures? | 27 |
| One with an unsettling look | 27 |
| Oberlin College's state | 27 |
| OPEC's "gold" | 27 |
| One of five Norwegian kings | 27 |
| One with lots of experience | 27 |
| One might want to settle it | 27 |
| Ornamental, poisonous shrub | 27 |
| One with designs on Jackie? | 27 |
| One of the Prozorov sisters | 27 |
| One interpreted by an augur | 27 |
| Online "Jeepers!" | 27 |
| Oblast bordering Kazakhstan | 27 |
| One way to put out an album | 27 |
| Opportunity's frequency | 27 |
| Output of some coffeemakers | 27 |
| Out of the public spotlight | 27 |
| One way to express yourself | 27 |
| Org. Indonesia left in 2008 | 27 |
| Oil giant with HQ in Vienna | 27 |
| One raising one's voice | 27 |
| Ones giving their addresses | 27 |
| Once around, for John Glenn | 27 |
| One of the San Juan Islands | 27 |
| One of Pan's companions | 27 |
| Outer area of an escutcheon | 27 |
| Overseas-flight destination | 27 |
| One who skated on thin ice? | 27 |
| Organ repair sites, briefly | 27 |
| Olympic figure skater Brian | 27 |
| One of 2.7 million Japanese | 27 |
| Others, south of the border | 27 |
| Ontario-Quebec border river | 27 |
| Opposite of "aah" | 27 |
| Opposite of "non" | 27 |
| Owned jointly by you and me | 27 |
| Opposite of safe, sometimes | 27 |
| One end of a fallopian tube | 27 |
| One taking too many courses | 27 |
| Once-___ (quick appraisals) | 27 |
| Ornament shaped like an egg | 27 |
| Olympian who stunned Hitler | 27 |
| One of the capitalist class | 27 |
| Olive or her brother Castor | 27 |
| Olive first spotted in 1919 | 27 |
| Olive -- (Popeye's gal) | 27 |
| One of the greenhouse gases | 27 |
| One regulated by the F.E.C. | 27 |
| Observatory NE of San Diego | 27 |
| One with a notably hard bed | 27 |
| Opposite of "wet" | 27 |
| One of Henry VIII's six | 27 |
| Official political policies | 27 |
| One newton per square meter | 27 |
| Oberammergau's ___ play | 27 |
| Ontario's _____Bernardo | 27 |
| Org. with balls and strikes | 27 |
| One of Duke's teammates | 27 |
| One of "Dem Bums" | 27 |
| One of Kelsey's costars | 27 |
| One may be required to park | 27 |
| Org. that supports fake fur | 27 |
| Org. that promotes veganism | 27 |
| Ontario's Premier David | 27 |
| Org. that holds the Masters | 27 |
| Org. for Tiger Woods: Abbr. | 27 |
| Org. for McIlroy and Donald | 27 |
| Ones who get a third degree | 27 |
| Overwhelm with, as homework | 27 |