| Oslo's river (RAKE anag.) | 29 |
| Osmics is the study of these | 28 |
| Osmonds' birthplace | 23 |
| Osmonds' home state | 23 |
| Osprey or European buzzard | 26 |
| Ospreys' relatives | 22 |
| Ossa or Etna e.g.: abbr. | 25 |
| Ossining's former name | 26 |
| Osso _____ (veal dish) | 22 |
| Ostend or Brest: Abbr. | 22 |
| Ostentaciously decorated | 24 |
| Ostentatious accessories | 24 |
| Ostentatious accessory | 22 |
| Ostentatious in manner | 22 |
| Ostentatious, in a way | 22 |
| Ostentatious; fanciful | 22 |
| Ostentatiously colorful | 23 |
| Ostentatiously decorated | 24 |
| Ostentatiously esthetic | 23 |
| Ostentatiously lofty in style | 29 |
| Osteoarthritis treatment | 24 |
| Osteologist's dinnerware? | 29 |
| Osteoporosis threatens it | 25 |
| Osterreich's capital | 24 |
| Ostracized one in the Bible | 27 |
| Ostrich feather product | 23 |
| Ostrich's Aussie cousin | 27 |
| Ostrich's Aussie cousins | 28 |
| Ostrich's extinct cousin | 28 |
| Ostrich's kin down under | 28 |
| Ostrich's look-alike | 24 |
| Ostrich's production | 24 |
| Ostrich's relative | 22 |
| Ostrich's relatives | 23 |
| Ostrich's S.A. look-alike | 29 |
| Ostrich-like birds: Var. | 24 |
| Ostriches and kangaroos | 23 |
| Ostriches' cousins | 22 |
| Ostriches' relatives | 24 |
| OSX scheduling software | 23 |
| OT book about a census | 22 |
| Otello portrayer, e.g. | 22 |
| Oteri of "SNL" fame | 29 |
| Othello and his countrymen | 26 |
| Othello's adversary | 23 |
| Othello's antagonist | 24 |
| Othello's betrayer | 22 |
| Othello's confidant | 23 |
| Othello's deceiver | 22 |
| Othello's evil advisor | 26 |
| Othello's false friend | 26 |
| Othello's last words | 24 |
| Othello's lieutenant | 24 |
| Othello's perfidious aide | 29 |
| Othello's persecutor | 24 |
| Othello's tormentor | 23 |
| Othello's treasonous aide | 29 |
| Othello's villainous aide | 29 |
| Other "mujeres" | 25 |
| Other Built to Spill song? | 26 |
| Other E.T.O. area of B.O.B. | 27 |
| Other folk, in Caracas | 22 |
| Other half of a hit 45 | 22 |
| Other half of continuum | 23 |
| Other half, so to speak | 23 |
| Other name for Myanmar | 22 |
| Other name of Lalitpur, Nepal | 29 |
| Other nations, to Israelites | 28 |
| Other than what is implied | 26 |
| Other than what was listed | 26 |
| Other women, in Mexico | 22 |
| Other women, to El Cid | 22 |
| Other, in AndalucÃa | 22 |
| Other, in Domingo's land | 28 |
| Other, south of the border | 26 |
| Other-name indicator, briefly | 29 |
| Others at the Alhambra | 22 |
| Others in the Sierra Madre | 26 |
| Others of the same class | 24 |
| Others, on the Orinoco | 22 |
| Others, south of the border | 27 |
| Others, to Andalusians | 22 |
| Others, with 'the' | 26 |
| Otherwise called (Abbr.) | 24 |
| Otherwise called, briefly | 25 |
| Otherwise, in Scotland | 22 |
| Otherworldly greeting? | 22 |
| Otherworldly in the extreme | 27 |
| Otherworldly ones, for short | 28 |
| Otis of Mayberry doll? | 22 |
| Otis of Mayberry, for one | 25 |
| Otis of the K.C. Royals | 23 |
| Otis Redding record label | 25 |
| Otis Redding's pal Thomas | 29 |
| Otis' pal, in film | 22 |
| Otitis, more familiarly | 23 |
| Otolaryngolo-gists, for short | 29 |
| Otolaryngologist, briefly | 25 |
| Otolaryngologist, for short | 27 |
| Otologist's concern | 23 |