| Interstate approaches | 21 |
| Interstate commerce watchdog for the Feds | 41 |
| Interstate demarcation | 22 |
| Interstate diner, perhaps | 25 |
| Interstate distances | 20 |
| Interstate divider | 18 |
| Interstate division | 19 |
| Interstate driver's options | 31 |
| Interstate entrance or exit | 27 |
| Interstate entrance/exit | 24 |
| Interstate entrances | 20 |
| Interstate exit | 15 |
| Interstate exits | 16 |
| Interstate feature | 18 |
| Interstate features | 19 |
| Interstate grid, e.g. | 21 |
| Interstate H-1 locale | 21 |
| Interstate H-1's locale | 27 |
| Interstate H-1's place | 26 |
| Interstate hauler | 17 |
| Interstate haulers | 18 |
| Interstate highway division | 27 |
| Interstate highway fixtures | 27 |
| Interstate Highway System creator: Abbr. | 40 |
| Interstate hwy. ___ | 19 |
| Interstate info | 15 |
| Interstate interchange establishment | 36 |
| Interstate misadventure | 23 |
| Interstate overseer | 19 |
| Interstate pull-off point | 25 |
| Interstate ramp | 15 |
| Interstate rig | 14 |
| Interstate roller | 17 |
| Interstate rte. | 15 |
| Interstate service-center feature | 33 |
| Interstate sight | 16 |
| Interstate sign | 15 |
| Interstate sign abbr. | 21 |
| Interstate sign with an arrow | 29 |
| Interstate sign word | 20 |
| Interstate sign: Abbr. | 22 |
| Interstate speed limit, often | 29 |
| Interstate stop | 15 |
| Interstate stopping point | 25 |
| Interstate syst. | 16 |
| Interstate through Chicago | 26 |
| Interstate through Houston | 26 |
| Interstate traveler | 19 |
| Interstate truck | 16 |
| Interstate trucks | 17 |
| Interstate, often | 17 |
| Interstate-building prez | 24 |
| Interstate-championing prez | 27 |
| Interstate: Abbr. | 17 |
| Interstates | 11 |
| Interstates, e.g.: Abbr. | 24 |
| Interstates: abbr. | 18 |
| Interstellar | 12 |
| Interstellar area | 17 |
| Interstellar cloud | 18 |
| Interstellar cloud in the Sagittarius area of the Milky Way | 59 |
| Interstellar clouds | 19 |
| Interstellar dist. | 18 |
| Interstellar distance | 21 |
| Interstellar dust cloud | 23 |
| Interstellar gas cloud | 22 |
| Interstellar matter | 19 |
| Interstellar measure | 20 |
| Interstellar space clouds | 25 |
| Interstellar space vessel | 25 |
| Interstellar unit | 17 |
| Interstellar valet's job? | 29 |
| Interstice | 10 |
| Interstice in a leaf | 20 |
| Interstice on an insect's wing | 34 |
| Interstices | 11 |
| Interstitially, say | 19 |
| Intertangle | 11 |
| Intertangles | 12 |
| Intertwine | 10 |
| Intertwined | 11 |
| Intertwined: Var. | 17 |
| Intertwines | 11 |
| Intertwines anew | 16 |
| Intertwines yarn | 16 |
| Intertwining | 12 |
| Intertwining pattern | 20 |
| Intertwist | 10 |
| Intertwisted | 12 |
| Interurban commuter? | 20 |
| Interval | 8 |
| Interval between ordering and receiving | 39 |
| Interval between related events | 31 |
| Interval between stimulation and response | 41 |
| Interval between two related phenomena | 38 |
| Interval for Rossini | 20 |
| Interval in an athletic game | 28 |
| Interval in which something is tested | 37 |
| Interval of delay | 17 |
| Interval of inactivity | 22 |