Son In Law
noun
Your daughter's groom will become your son in law. He's a great guy! Congratulations!
むすめむこ
The readings for this word are both kun'yomi readings. You learned them when you learned the kanji, so you should be able to read this on your own.
いずれは娘婿を社長にするつもりです。
Sooner or later, I intend to make my son in law company president.