To get up or rise (from bed/seat); also used for something (like a fire) blazing up.
毎朝7時に起きる。
I get up at 7 every morning.
椅子から急に起きると目まいがした。
I felt dizzy when I suddenly stood up from the chair.
枯れ草に火が起き、あっという間に広がった。
A fire started in the dry grass and spread quickly.
To wake up; to be awake; to stay awake (not asleep).
昨夜は映画を見ていて、午前2時まで起きていた。
I stayed up watching a movie last night until 2 a.m.
赤ちゃんが夜中に何度も起きるので眠れなかった。
The baby woke up several times during the night, so I couldn't sleep.
彼はアラームで目は覚めても、なかなか起きない。
Even if the alarm wakes him, he doesn't get up easily.
To occur or happen (usually used for incidents or problems, often unfavorable).
昨日、近所で大きな喧嘩が起きたらしい。
It seems there was a big fight in the neighborhood yesterday.
誤解から思わぬ問題が起きることがある。
Misunderstandings can sometimes lead to unexpected problems.
急なトラブルが起きたため、会議は中止になった。
Because an unexpected problem occurred, the meeting was cancelled.