いやしくも

if you’re going to do something

→ いやしい

phrase Rare #43,112

if you’re going to do something A somewhat formal or literary expression, often used before urging someone to do something properly or to the best of their ability.

JA: いやしくも引き受けた仕事なら、最後までやり遂げなさい。

EN: If you’ve taken on a job, see it through to the end.

いやしくも何かをするなら、じょうずにやりなさい。

If you're going to do something, do it well.

いやしくも何かやるなら最善を尽くしなさい。

If you’re going to do something, do your very best.

いやしくも勉強をするなら、一生懸命やりなさい。

If you're going to study, put your heart into it.