| 起る | おこる | to occur; to happen | n4 |
| 起す | おこす | to raise; to raise up; to set up; to pick up | n4 |
| 起きる | おきる | to get up; to rise; to blaze up (fire); to wake up | n5 |
| 起こる | おこる | to occur; to happen | n4 |
| 起つ | たつ | to take action; to act; to rise (up); to rouse oneself | n5 |
| 起こす | おこす | to raise; to raise up; to set up; to pick up | n4 |
| 起 | おこり | source; origin; cause; beginning | |
| 起源 | きげん | origin; beginning; source | n1 |
| 縁起 | えんぎ | omen; sign of luck; origin; history | n2 |
| 起きあがる | おきあがる | to rise; to get up; to stand up; to sit up | n3 |
| 起り | おこり | source; origin; cause; beginning | |
| 起伏 | きふく | undulation; ups and downs; highs and lows | n1 |
| 思い起す | おもいおこす | to recall; to remember | n1 |
| 起き直る | おきなおる | to sit up | |
| 起し | おこし | development; revitalization; standing (something) up; waking up | n2 |
| 起き上がる | おきあがる | to rise; to get up; to stand up; to sit up | n3 |
| 起居 | ききょ | one's daily life; condition; well-being; state of one's health | |
| 飛び起きる | とびおきる | to jump up to one's feet | |
| 喚起 | かんき | arousal; excitation; awakening; evocation | n1 |
| 引き起こす | ひきおこす | to cause; to induce; to bring about; to provoke | n1 |
| 躍起 | やっき | desperate; frantic; excited; worked up | n2 |
| 起因 | きいん | to be caused by; to result from; to arise from; to stem from | |
| 寝起き | ねおき | lying down and getting up; waking; getting up; living (with) | |
| 起原 | きげん | origin; beginning; source | n3 |
| 想起 | そうき | remembering; recollection; calling to mind; anamnesis | n2 |
| 惹起 | じゃっき | bringing about; cause; provocation | |
| 起き出す | おきだす | to get out of bed; to show a leg | |
| 早起き | はやおき | getting up early; early rising; early riser; early bird | n4 |
| 叩き起す | たたきおこす | to wake (someone) up (roughly); to rouse out of bed; to awaken (someone) by knocking at the door | |
| 隆起 | りゅうき | protuberance; bulge; protrusion; projection | |
| 起点 | きてん | starting point; origin | n1 |
| 起床 | きしょう | rising (from one's bed); getting up; getting out of bed | n2 |
| 呼び起こす | よびおこす | to wake (someone) up (by calling for them); to awaken; to call (to mind); to bring back (memories) | n1 |
| 発起 | ほっき | originating (something); coming up with the idea; starting (something); initiating | |
| 起臥 | きが | daily life; daily living; waking up and going to sleep | n1 |
| 奮起 | ふんき | stirring; rousing oneself | |
| 引き起す | ひきおこす | to cause; to induce; to bring about; to provoke | n1 |
| 突起 | とっき | protuberance; projection; prominence; protrusion | n2 |
| 起立 | きりつ | standing up | n2 |
| 起訴 | きそ | prosecution; indictment | n3 |
| 提起 | ていき | raising (a question); posing (a problem); bringing up (an issue); presenting | n1 |
| 再起 | さいき | comeback; recovery; restoration; rally | |
| 起用 | きよう | appointment (to a position, job, etc.); being used for a role; promotion | n1 |
| 思い起こす | おもいおこす | to recall; to remember | n1 |
| 蜂起 | ほうき | uprising; revolt | n2 |
| 起草 | きそう | drafting (e.g. a bill); drawing up | n2 |
| 起きぬけ | おきぬけ | first thing after rising; as soon as getting up | |
| 起業 | きぎょう | starting a business; promotion of enterprise | n1 |
| 起動 | きどう | startup; booting up; activation; starting (e.g. engine, computer) | n1 |
| 起重機 | きじゅうき | crane; derrick | |
| 発起人 | ほっきにん | originator; promoter | |
| 蹶起 | けっき | rising to action; standing up against; jumping to one's feet | n1 |
| 抱き起こす | だきおこす | to lift (a person) in one's arms; to help (a person) sit up | |
| 朝起き | あさおき | early rising | |
| 生起 | せいき | occurrence; taking place; happening | n1 |
| 起稿 | きこう | beginning writing (a draft); drafting | n2 |
| 揺り起こす | ゆりおこす | to shake someone awake | |
| 奮い起す | ふるいおこす | to muster (e.g. courage); to gather; to collect; to pluck up | |
| 巻き起こす | まきおこす | to create (a sensation); to cause (a commotion); to give rise to (controversy); to raise (a cloud of dust) | |
| 起き伏し | おきふし | rising and going to bed; daily life; all the time; constantly | |
| 起死回生 | きしかいせい | revival from the brink of death; recovering from a hopeless situation; resuscitation; revitalization | |
| 巻き起す | まきおこす | to create (a sensation); to cause (a commotion); to give rise to (controversy); to raise (a cloud of dust) | |
| 起算 | きさん | reckoning from some position (e.g. point, date, etc.) | |
| 縁起物 | えんぎもの | talisman; lucky charm | |
| 起こり得る | おこりうる | to be possible to occur | |
| 起請 | きしょう | vow | n2 |
| 奮い起つ | ふるいたつ | to cheer up; to be encouraged (by); to be in high spirits | |
| 興起 | こうき | rise; ascendency; aroused energy; high-spirited action | |
| 継起 | けいき | occurring in succession | n2 |
| 起請文 | きしょうもん | religious oath in writing; written vow to the gods | |
| 起工 | きこう | setting to work | n2 |
| 掻き起す | かきおこす | to stir up (e.g. a fire) | |
| 振起 | しんき | encouragement; stimulation | n1 |
| 勃起 | ぼっき | erection (of the penis); becoming erect; stiffening; welling up (of an emotion) | |
| 掘り起こす | ほりおこす | to dig up; to unearth; to uncover | n1 |
| 起き抜け | おきぬけ | first thing after rising; as soon as getting up | |
| 起案 | きあん | drafting (a plan, contract, etc.); drawing up | |
| 起こりうる | おこりうる | to be possible to occur | |
| たたき起こす | たたきおこす | to wake (someone) up (roughly); to rouse out of bed; to awaken (someone) by knocking at the door | |
| 起業家 | きぎょうか | entrepreneur; person who starts a new business | |
| 起源説 | きげんせつ | theory of origins; origin hypothesis | |
| わき起こる | わきおこる | to well up; to burst; to arise | |
| 七転び八起き | ななころびやおき | not giving up; keeping at it until one succeeds; falling seven times, getting up eight; the vicissitudes of life | |
| 書き起す | かきおこす | to start writing; to begin (a book, letter, etc.) | |
| 縁起直し | えんぎなおし | change of fortune; trying to change one's luck | |
| 起動時 | きどうじ | startup (point in) time | |
| 起承転結 | きしょうてんけつ | introduction, development, turn and conclusion (quadripartite structure of certain Chinese poetry); story composition and development | |
| 励起 | れいき | excitation; stimulation; revitalization; reinvigoration | |
| 起句 | きく | opening line; opening line of a (Chinese) poem | n5 |
| 起筆 | きひつ | beginning to write; beginning of a brush-stroke | |
| 振り起す | ふりおこす | to stir up; to stimulate | |
| 奮い起こす | ふるいおこす | to muster (e.g. courage); to gather; to collect; to pluck up | |
| 起電 | きでん | generation of electricity | |
| 起伏し | おきふし | rising and going to bed; daily life; all the time; constantly | |
| 沸き起る | わきおこる | to well up; to burst; to arise | |
| 決起 | けっき | rising to action; standing up against; jumping to one's feet | n1 |
| 起立性 | きりつせい | orthostatic | |
| 沸き起こる | わきおこる | to well up; to burst; to arise | |
| 再起動 | さいきどう | restart; reboot | |
| 縁起もの | えんぎもの | talisman; lucky charm | |