| Answer | Crossword Clue |
|---|---|
| stiffer | Requiring strength or effort; difficult |
| stiffest | Requiring strength or effort; difficult |
| distance | to finish or complete something, esp. something difficult, challenging, or requiring sustained effort |
| herculean | Requiring great strength or effort |
| ticklish | (of a situation or problem) Difficult to deal with; requiring careful handling |
| trickiest | (of a task, problem, or situation) Requiring care and skill because difficult or awkward |
| tricky | (of a task, problem, or situation) Requiring care and skill because difficult or awkward |
| trickier | (of a task, problem, or situation) Requiring care and skill because difficult or awkward |
