Enter a clue or pattern or both:
The Clue
Formidable, as a task (9 letter answer)
The Answer
HERCULEAN
Tags
Notes
The answer HERCULEAN is so rare that it appears less than once every 2500 puzzles.
Related Clues
Almost impossible, as a task
Definition
HERCULEAN as an adjective:
1. (herculean, powerful) = displaying superhuman strength or power; "herculean exertions"
2. extremely difficult; requiring the strength of a Hercules; "a herculean task"