(てっけん)

てっけん
noun
iron fist; clenched fist; punch
body-partaction
1. iron fist; hard punch; a blow with a clenched fist
Literally 'iron fist'. Refers to a powerful punch or blow with the fist. Used figuratively for forceful, authoritarian control or discipline.
鉄拳(てっけん)制裁(せいさい)(くわ)える
To deliver iron-fisted punishment.
The leader ruled the country with an iron fist.
In the past, physical punishment with the fist was sometimes used, but it is no longer acceptable today.

Compound of (てつ) (iron) + (けん) (fist). Used both literally (a powerful punch) and figuratively (harsh, domineering control).

Common collocations

Note: 鉄拳(てっけん)制裁(せいさい) is the most common fixed compound — physical punishment as a form of discipline, now generally considered unacceptable.