Control, Restraint
noun, の adjective, verbal noun
Try to suppress and control the enemy. We must control them.
よくせい
This is a jukugo word that uses the on'yomi readings of the kanji. You should be able to read this on your own.
生理前は、月経前症候群のせいで、感情をうまく抑制することができません。
I can’t control my emotions well before my period because of PMS.