noun
many obstacles; innumerable difficulties
Refers to a great number of hardships or obstacles, often used in formal or literary contexts. Commonly appears in the set phrase 万難を排して (overcoming all difficulties).
万難を排して、彼は計画を実行した。
He carried out the plan, overcoming all difficulties.
このプロジェクトには万難が伴うだろう。
This project will involve innumerable difficulties.