To Punish
To Penalize
する verb
When you do a penalty to someone you are trying to punish or to penalize them.
The reading is the same as what you learned with the kanji. Just remember that the つ becomes a small っ so I don't have to punish you.
その選手は明らかにドーピングをしていたのに、罰せられなかったんだ。
The athlete was clearly doping, yet he wasn't punished.
ウソをついている子どもがいたら、罰する前にまず理由を聞いてあげるべきです。
If a child is lying, you should first ask why before punishing them.
コウイチはトーフグの秘密を漏らした従業員を罰した。
Koichi punished the employees who leaked Tofugu’s secrets.