| Answer | Crossword Clue |
|---|---|
| RARER | More difficult to collect |
| CHAN | Sleuth who said, "Bills sometimes more difficult to collect than murder clues" |
| TOUGHER | More difficult to chew |
| STEEPER | More difficult to climb. |
| RARER | More difficult to find |
| CAKIER | More difficult to wipe away |
| DENSER | More difficult to get through to |
| GRISTLIER | More difficult to chew, in a way |
