| Answer | Crossword Clue |
|---|---|
| IRONJAWED | Tough to knock out |
| HASATIT | Responds to "Knock yourself out!" |
| SLIPAMICKEYTO | Try to knock out, maybe |
| AWE | Knock out, so to speak |
| WEDGED | Tough to get out |
| DEEPSEATED | Tough to root out |
| HARD | Tough to figure out |
| MESSY | Tough to sort out |
| KNOTTY | Tough to figure out |
| TRICKY | Tough to figure out |
| THORNY | Tough to figure out |
| ENIGMATIC | Tough to figure out |
| ENCODE | Make tough to make out |
| ENIGMA | Tough one to figure out |
| JAMS | Tough spots to get out of |
| LIONSDEN | Tough place to come out a winner |
| MAZE | It might be tough to get out of |
| ELBOWGREASE | It may be needed to get out a tough stain |
