肝心要

かんじんかなめ

crucial; key; most important; main (point)

Also written 肝腎要

Meaning

adj-noadj-nan
crucial; key; most important; main (point)

Example sentences

そう言えば、肝心要の部分を何も決めていなかった。

Now that you mention it, I wasn't involved in the decision-making for the vital part.