The Clue
Backbreaking (7 letter answer)
The Answer
ARDUOUS
Tags
Notes
The answer ARDUOUS is so rare that it appears less than once every 2500 puzzles.
Definition
ARDUOUS as an adjective:
1. (arduous, backbreaking, grueling, gruelling, hard, heavy, laborious, operose, punishing, toilsome) = characterized by toilsome effort to the point of exhaustion; especially physical effort; "worked their arduous way up the mining valley"; "a grueling campaign"; "hard labor"; "heavy work"; "heavy going"; "spent many laborious hours on the project"; "set a punishing pace"
2. (arduous, straining, strenuous) = taxing to the utmost; testing powers of endurance; "his final, straining burst of speed"; "a strenuous task"; "your willingness after these six arduous days to remain here"- F.D.Roosevelt
3. difficult to accomplish; demanding considerable mental effort and skill; "the arduous work of preparing a dictionary"