Subjugation
Noun, する verb, and の adjective
ちんあつ
警察が三日がかりでデモ隊を鎮圧しました。
The police suppressed the demonstrators by the third day.
Tranquilize pressure with medication that helps with its suppression. Then you won't have to feel it anymore.
This is a jukugo word that uses the on'yomi readings of the kanji. You should be able to read this on your own.