Divorce
noun, する verb
Detach from your marriage. This is a divorce.
りこん
This is a jukugo word, which usually means on'yomi readings from the kanji. If you know the readings of your kanji you'll know how to read this as well.
「彼とは離婚するつもりなの。」「ちょっ…早まらないで。決断する前によく考えて。」
"I’m going to divorce him." "Don’t be so rash. Think carefully before you make a decision."