1One of two equal parts when a whole is divided in two; used for amounts, time, or degree.
リンゴを半分に切って、弟と分けた。
I cut the apple in half and shared it with my little brother.
宿題はまだ半分しか終わっていない。
I've only finished half of my homework so far.
予算を半分に減らさなければならない。
We have to cut the budget in half.
彼の話は半分本当で、半分は冗談だった。
Half of what he said was true, and the other half was a joke.