| Answer | Crossword Clue |
|---|---|
| NARROW | Hard to squeeze through |
| NARROW | Tough to squeeze through |
| LONG | Hard to sit through |
| DENSE | Hard to get through |
| DENSE | Hard to see through |
| OPAQUE | Hard to see through |
| MURKY | Hard to see through |
| DENSE | Hard to get through to |
| PINHOLE | It's hard to see through |
| FOGS | They're hard to see through |
| SMEARY | Hard to see through, say |
| MISTS | They're hard to see through |
| REDTAPE | It's hard to cut through |
| DENSE | Hard to hack a path through |
| FOGS | Becomes hard to see through, with "up" |
