iron hand

Noun

figuratively

(figuratively) Firmness, inflexibility, sternness.

Japanese Meaning

堅固さ、断固たる態度 / 融通がきかない硬直さ / 厳格さ、厳しさ

The new principal ruled the school with an iron hand to restore discipline.

新しい校長は規律を取り戻すために厳しい統制で学校を治めた。

Sense（1）

(figuratively) Firmness, inflexibility, sternness.

Reverend Harris ran Clerkebury with an iron hand and an abiding sense of fairness.

iron hands

（ plural ）