プログレッシブ和英中辞典(第4版)の解説
すいこう【遂行】
accomplishment; execution
遂行する 〔成し遂げる〕accomplish, perform ((one's duties))；〔実行する〕execute, carry out（▼executeのほうがやや堅い語）
事業を遂行した
He saw the undertaking through to the end.
任務を遂行する
perform [execute/carry out] one's duties
彼は仕事の遂行に腕を見せた
He showed his ability in carrying out his work.