expediency
🇺🇸
/ɪkˈspiːdiənsi/
🇬🇧
/ɪkˈspiːdiənsi/
when doing something is helpful or useful for a goal, but might not be the fairest or best way
He chose the path of expediency to solve the problem quickly.
彼は問題を迅速に解決するために便宜を図る道を選んだ。