プログレッシブ和英中辞典(第３版)の解説
にん【任】
〔務め〕a task, a job; 〔責任〕one's responsibility; 〔職務〕a post, an office
- 任を全うする
fulfill one's duty ((as)) - 彼は会社で渉外の任に当たった
He took charge of public relations for the firm. - 部長の任にあった
He held the post [office] of general manager. - 任を辞す
resign from one's post [office] - 議長は私の任ではない
I am not 「fit for [up to／equal to] the task of being chairperson.