1 文書を見つけるための辞書。

• hard, difficult
• 難しい, ムズい, 困難, むずい, 難し, 難い
• not easy; requiring great physical or mental effort to accomplish or comprehend or endure; "a difficult task"; "nesting places on the cliffs are difficult of access"; "difficult times"; "why is it so hard for you to keep a secret?"
• 簡単でない