Suicide
Self Determination
noun, する verb
When you decide with your self, that is your own decision. That comes from you. That comes from your self determination. But the word is mainly used in Japan as a euphemism for suicide. It's kind of important that you know that.
じけつ
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.
あのさむらいは自決した。
That samurai committed suicide.
コウイチ社長は、トーフグは自決けんを強く心からしじするということを、何どもくりかえした。
President Koichi reiterated Tofugu's strong and wholehearted support for our right to self-determination.
彼は、獄中で絶望し、自決してしまったんです。
He was depressed during his imprisonment and committed suicide.