| Obnoxiously proper one | 22 |
| Obnoxiously proper person | 25 |
| Obnoxiously proper sort | 23 |
| Obnoxiously proper types | 24 |
| Oboe's air channel | 22 |
| Oboe's predecessor | 22 |
| Oboes and clarinets, e.g. | 25 |
| Obote's overthrower | 23 |
| Obscenity obscurer, sometimes | 29 |
| Obscenity watcher: Abbr. | 24 |
| Obscurer of trees, for some | 27 |
| Obscures, with "up" | 29 |
| Obsequious Dickens character | 28 |
| Observance before Easter | 24 |
| Observance of correctness | 25 |
| Observance of moral law | 23 |
| Observance through Oct. | 23 |
| Observances of the law | 22 |
| Observant Mormons, e.g. | 23 |
| Observant Muslim, at times | 26 |
| Observation about Las Vegas? | 28 |
| Observation by Davidson | 23 |
| Observation of cardinals, say | 29 |
| Observation on the ad era | 25 |
| Observation re candidates? | 26 |
| Observation spot for tourists | 29 |
| Observation, final part | 23 |
| Observatory explosions | 22 |
| Observatory NE of San Diego | 27 |
| Observatory near San Diego | 26 |
| Observatory observation | 23 |
| Observatory observations | 24 |
| Observatory observer: Abbr. | 27 |
| Observatory references | 22 |
| Observe a football player? | 26 |
| Observe all the formalities | 27 |
| Observe Arbor Day, say | 22 |
| Observe in the distance | 23 |
| Observe surreptitiously | 23 |
| Observe with the mouth open | 27 |
| Observe Yom Kippur, e.g. | 24 |
| Observe Yom Kippur, in a way | 28 |
| Observe, as the Sabbath | 23 |
| Observe, walls in Arles? | 24 |
| Observe, with "of" | 28 |
| Observed from up close | 22 |
| Observed the seventh day | 24 |
| Observer of Yom Kippur | 22 |
| Observer's activity | 23 |
| Observer's faculty | 22 |
| Observers of the midnight sun | 29 |
| Observers of the rag trade? | 27 |
| Observes a religious day | 24 |
| Observes a religious holiday | 28 |
| Observes à la Mr. Magoo | 26 |
| Observes Ramadan, e.g. | 22 |
| Observes Ramadan, in a way | 26 |
| Observes Yom Kippur, e.g. | 25 |
| Observes, with "of" | 29 |
| Obsess in front of the mirror | 29 |
| Obsess over one's dress | 27 |
| Obsessed fictional captain | 26 |
| Obsessed fictional whaler | 25 |
| Obsessed with buttons? | 22 |
| Obsessed with shopping? | 23 |
| Obsessed, nonsocial ones | 24 |
| Obsessed, with "on" | 29 |
| Obsesses before the mirror | 26 |
| Obsession for Lady Macbeth | 26 |
| Obsession for some teenagers | 28 |
| Obsession of X-rated films | 26 |
| Obsession with an accent | 24 |
| Obsessive fictional skipper | 27 |
| Obsessive hunter of fiction | 27 |
| Obsessive literary captain | 26 |
| Obsessive whaler of fiction | 27 |
| Obsidian rock producer | 22 |
| Obsidian, before cooling | 24 |
| Obsolescence, in a way | 22 |
| Obsolescent audio source | 24 |
| Obsolescent belt attachment | 27 |
| Obsolescent carnival prize | 26 |
| Obsolescent communication | 25 |
| Obsolescent conjunction | 23 |
| Obsolescent contraction | 23 |
| Obsolescent data holder | 23 |
| Obsolescent dining facility | 27 |
| Obsolescent directories | 23 |
| Obsolescent election item | 25 |
| Obsolescent entrepreneur | 24 |
| Obsolescent farm personnel | 26 |
| Obsolescent Kodak product | 25 |
| Obsolescent letter opener? | 26 |
| Obsolescent mail abbr. | 22 |
| Obsolescent media holder | 24 |
| Obsolescent occupation | 22 |
| Obsolescent office position | 27 |
| Obsolescent office positions | 28 |
| Obsolescent office temp | 23 |
| Obsolescent PC environment | 26 |