| 100% | AIRHOLE | 7 | Opening for ventilation in a closed space |
| 54% | CONCOURSE | 9 | Open space in a railway terminal, for example |
| 51% | APERTURE | 8 | Opening for light in a camera |
| 50% | SLOT | 4 | Opening for envelopes in a post office wall |
| 50% | SLOTS | 5 | Openings for envelopes in a post office wall |
| 49% | AIRFLOW | 7 | Good ventilation in a plane, for example |
| 47% | OILHOLE | 7 | Opening for a lubricant, as in a drill |
| 47% | CLEARING | 8 | In a forest, an open space of land |
| 46% | SLOT | 4 | Opening in a machine for coins |
| 46% | HOLD | 4 | Space in a ship for cargo |
| 46% | BOOT | 4 | Space in a car for luggage |
| 45% | SLOT | 4 | Opening in a vending machine for coins |
| 45% | GARAGE | 6 | Space in a building for parking cars |
| 45% | GLADE | 5 | Open space in a forest |
| 45% | CLEARING | 8 | Open space in a woodland |
| 45% | ONCE | 4 | ___ in a blue moon, space-related idiom for a rare occurrence |
| 44% | OWEN | 4 | Clive —, Best Actor in a Supporting Role Oscar nominee for Closer |
| 43% | PORE | 4 | A little hole or opening in the skin for sweating |
| 43% | PLAYROOM | 8 | Space in a house for children to have fun in |
| 43% | NEWSHOLE | 8 | Space in a paper available for journalism instead of ads |
| 43% | MANCAVE | 7 | Space in a home meant for dad and the boys |
| 43% | RENTSTO | 7 | Provides space for, in a way |
| 43% | SAVE | 4 | Success for a closer in baseball |
| 42% | ONENOTRUMP | 10 | Common opening bid for a balanced hand, in bridge |
| 42% | STORAGE | 7 | Space available in a room for keeping things in |
| 42% | SAYSAH | 6 | Opens up for examination, in a way |
| 40% | CHAMBER | 7 | A closed space, usually a bedroom |
| 40% | AGORAPHOBIA | 11 | Anxiety disorder, a fear of open spaces, named by Karl Westphal in 1871 |
| 40% | ZOOMED | 6 | Moved in for a close-up on a camera |
| 39% | UNIONMEMBERSHIP | 15 | Requirement in a closed shop |