起きる|おきるokiru[2]nakadaka (mid-high)

1. ichidan verb, intransitive verbto get up; to rise; to blaze up (fire)
   ６時じごろ起おきた。↗

   I got up at about six.
2. ichidan verb, intransitive verbto wake up; to be awake; to stay awake
   お子こさんはまだ起おきているのですか。↗

   Is the kid still up?
3. ichidan verb, intransitive verbto occur (usu. of unfavourable incidents); to happen; to take place
   「事故じこが起おきれば、すぐにわかるよ」と彼かれは言ゆう。↗

   "If there is an accident," he says, "they will know right away."

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

• Synonym目覚めるめざめるNeutralWaking from sleep, and by extension awakening to something, as in 「才能に目覚める」; unlike 「起きる」 it never covers getting out of bed or events occurring.
• Synonym覚めるさめるNeutralOnly waking — very common as 「目が覚める」 — plus sobering up or coming to one's senses; no sense of getting up, rising, or things happening.
• Synonym起床きしょうWrittenA written Sino-Japanese word for getting out of bed only, seen in schedules and dorm rules; in speech people just say 「起きる」.
• Synonym出来しゅったいWrittenRead 「しゅったい」; a written, somewhat old-fashioned word for events occurring or things being completed, almost never used daily — just say 「起きる」.
• Synonym発生はっせいWrittenA Sino-Japanese word for the occurrence of accidents, disasters and phenomena, common in news and formal prose; it never refers to waking or getting up.
• Synonym立ち上がるたちあがるNeutralStresses standing up from a sitting or lying position, and figuratively rising to action or starting up; it has no waking or occurrence sense.
• Related起こるおこるNeutralFor events occurring it is close to 「起きる」 and usually interchangeable; very common in daily speech, and it can also describe emotions arising.
• Related起き上がるおきあがるNeutralStresses the movement of sitting up or standing up from lying down; 「起きる」 can express this too, but this word has no waking or occurrence sense.
• Related生ずるしょうずるWrittenA written word for something arising or being produced, typically problems and changes; it also works transitively. In speech, 「起きる」 is the norm.
• Related生じるしょうじるWrittenMeans arising or coming about, as in 「問題が生じる」; more written than 「起きる」, and it can also be transitive, meaning to cause something.
• Related立つたつNeutralStanding or rising to one's feet, close to 「起きる」 in that sense; it also has occurrence uses like 「波が立つ」「噂が立つ」, but never means waking or getting up.
• Related起立きりつFormalA formal word for standing up, heard as the command 「起立、礼」 in classrooms and meetings; not used for waking or getting out of bed.
• Related生起せいきWrittenA written Sino-Japanese word for phenomena or events occurring, almost never used in daily life; say 「起きる」, or 「発生」 in formal prose.
• Related寝覚めるねざめるWrittenOnly waking from sleep; the verb form is rare and it mostly appears as the noun 「寝覚め」. In everyday speech use 「目が覚める」 or 「起きる」.
• Antonym寝るねるNeutralThe antonym on two levels: sleeping versus getting up, and lying down versus rising.
• Antonym横になるよこになるNeutralThe opposite of 「起きる」 in the rising sense: to lie down for a rest, without necessarily falling asleep.

「起きる」 covers getting up, waking and staying awake, and also events occurring. For events, 「起こる」 is equally common, while 「発生」 is the word for news and formal prose. For waking alone use 「目覚める」 or 「覚める」; for rising to your feet, 「立つ」 or 「立ち上がる」. Most of the rest are written-style words.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

1. （起おきる）人ひとや棒状ぼうじょうのものなどが、伏ふせたりして横よこになっている状態じょうたいから、縦たてになる。立体りったいの最もっとも長ながい軸じくが、重力じゅうりょくの方向ほうこうと平行へいこうあるいはそれに近ちかい角度かくどで位置いちする状態じょうたいになる。起き上おきあがる。
2. （起おきる）眠ねむりから覚さめる。寝床ねどこから出でる。
3. （起おきる）寝ねない状態じょうたいでいる。
4. （起おきる）気きがつく。正気しょうきに戻もどる。
5. （起おきる）物事ものごとが生しょうじる。発生はっせいする。おこる。
6. ある原因げんいんによって物事ものごとが生しょうじる。
7. （熾おききる）火ひの勢いきおいが増ます。炭すみに火ひがつく。