| Obstacle in red | 15 |
| Obstacle in father-son relations | 32 |
| Obstacle in Exodus | 18 |
| Obstacle for Santa? | 19 |
| Obstacle for Moses | 18 |
| Obstacle for George of the Jungle | 33 |
| Obstacle for Curtis Strange | 27 |
| Obstacle for an author | 22 |
| Obstacle for an aspiring D.A. | 29 |
| Obstacle for a sleeping princess | 32 |
| Obstacle for a barber | 21 |
| Obstacle encountered at 12 a.m.? | 32 |
| Obstacle course in some video games | 35 |
| Obstacle course impediment | 26 |
| Obstacle clearer | 16 |
| Obstacle | 8 |
| Obsolete videotape format | 25 |
| Obsolete VCR's | 18 |
| Obsolete VCR format | 19 |
| Obsolete typewriter accessory | 29 |
| Obsolete term for legal insanity | 32 |
| Obsolete symbol | 15 |
| Obsolete suffix | 15 |
| Obsolete Spanish coin | 21 |
| Obsolete sound system | 21 |
| Obsolete rulers | 15 |
| Obsolete repro machine | 22 |
| Obsolete records | 16 |
| Obsolete recordings, for short | 30 |
| Obsolete recording mode. abbr. | 30 |
| Obsolete program saver, for short | 33 |
| Obsolete prison garb | 20 |
| Obsolete preposition | 20 |
| Obsolete pocket | 15 |
| Obsolete plane | 14 |
| Obsolete piano key material | 27 |
| Obsolete phone part | 19 |
| Obsolete palindromic preposition | 32 |
| Obsolete math-class tool | 24 |
| Obsolete math aid | 17 |
| Obsolete map abbr. | 18 |
| Obsolete item | 13 |
| Obsolete Italian currency units | 31 |
| Obsolete hypothesis about the universe's origin | 51 |
| Obsolete geog. abbr. | 20 |
| Obsolete form of "to be" | 34 |
| Obsolete for "obsolete" | 33 |
| Obsolete disc player | 20 |
| Obsolete dashboard option | 25 |
| Obsolete curtain material? | 26 |
| Obsolete court tactic | 21 |
| Obsolete communication | 22 |
| Obsolete coin | 13 |
| Obsolete club | 13 |
| Obsolete calculator | 19 |
| Obsolete calculating tool | 25 |
| Obsolete bass lute | 18 |
| Obsolete auxiliary | 18 |
| Obsolete anesthetic | 19 |
| Obsolete "for fear that" | 34 |
| Obsolete "before" | 27 |
| Obsolete | 8 |
| Obsolescing PC part | 19 |
| Obsolescent wedding word | 24 |
| Obsolescent way to store music | 30 |
| Obsolescent vote finalizer | 26 |
| Obsolescent VCR format | 22 |
| Obsolescent type of pad | 23 |
| Obsolescent TV peripherals | 26 |
| Obsolescent term of address | 27 |
| Obsolescent symbol | 18 |
| Obsolescent summoner | 20 |
| Obsolescent suffix | 18 |
| Obsolescent storage device | 26 |
| Obsolescent slope conveyance | 28 |
| Obsolescent skill | 17 |
| Obsolescent skier's lift with a curved lower part | 53 |
| Obsolescent rooftop fixture | 27 |
| Obsolescent roof topper | 23 |
| Obsolescent refrigerant | 23 |
| Obsolescent receptacle? | 23 |
| Obsolescent printer type | 24 |
| Obsolescent preposition | 23 |
| Obsolescent piano key material | 30 |
| Obsolescent phone part | 22 |
| Obsolescent phone feature | 25 |
| Obsolescent phone accessory | 27 |
| Obsolescent PC monitor type | 27 |
| Obsolescent PC environment | 26 |
| Obsolescent office temp | 23 |
| Obsolescent office positions | 28 |
| Obsolescent office position | 27 |
| Obsolescent occupation | 22 |
| Obsolescent media holder | 24 |
| Obsolescent mail abbr. | 22 |
| Obsolescent letter opener? | 26 |
| Obsolescent Kodak product | 25 |
| Obsolescent footwear | 20 |
| Obsolescent file | 16 |
| Obsolescent farm personnel | 26 |