| 危険 | きけん | danger; peril; hazard; risk | n4 |
| 危 | き | danger; Chinese "rooftop" constellation (one of the 28 mansions) | n5 |
| 危機 | きき | crisis; critical situation; emergency; pinch | n2 |
| 危ない | あぶない | dangerous; risky; hazardous; perilous | n5 |
| 危うい | あやうい | dangerous; in danger; facing imminent danger; precarious (situation) | n1 |
| 危険性 | きけんせい | (degree of) risk; riskiness; danger | |
| 危ぶむ | あやぶむ | to fear; to doubt; to have misgivings about; to worry about | n1 |
| 危機一髪 | ききいっぱつ | by a hair's breadth; in the nick of time; touch and go; close call | |
| 危急 | ききゅう | emergency; crisis; imminent danger; Vulnerable (conservation status) | |
| 危害 | きがい | injury; harm; danger | n1 |
| 危篤 | きとく | critical condition; being on the verge of death | |
| 危惧 | きぐ | apprehension; misgivings; uneasiness; fear | n1 |
| 危険日 | きけんび | unsafe day (when unprotected sex can to lead to conception) | |
| 危難 | きなん | peril; danger; hazard; distress | |
| 安危 | あんき | fate; safety; welfare | n3 |
| 危険物 | きけんぶつ | hazardous materials; dangerous goods; explosives; combustibles | |
| 絶滅危惧 | ぜつめつきぐ | threatened (species); endangered | |
| 危機遺産 | ききいさん | endangered world heritage site | |
| 危険度 | きけんど | degree of danger; danger level; risk level | |
| 危険人物 | きけんじんぶつ | dangerous person; security risk; loose cannon | |
| 危地 | きち | dangerous position; peril | n1 |
| 危なっかしい | あぶなっかしい | dangerous; critical; grave; uncertain | |
| 危急種 | ききゅうしゅ | vulnerable species | |
| 危急存亡 | ききゅうそんぼう | life-and-death matter; an emergency or crisis where survival is threatened | |
| 危機感 | ききかん | sense of impending crisis; sense of danger | n2 |
| 危なげ | あぶなげ | seeming dangerous; risky; unsafe; chancy | |
| 石油危機 | せきゆきき | oil crisis | |
| 危懼 | きく | apprehension; misgivings; uneasiness; fear | n5 |
| 危機管理 | ききかんり | crisis management | |
| 危険思想 | きけんしそう | dangerous thoughts | |
| 危険水域 | きけんすいいき | dangerous waters; dangerous stretch (of a situation, e.g. an economy); risky area | |
| 危機的 | ききてき | critical | |
| 危局 | ききょく | crisis | |
| 危機回避 | ききかいひ | crisis prevention; crisis avoidance | |
| 危虞 | きぐ | apprehension; misgivings; uneasiness; fear | n2 |
| 危殆 | きたい | danger; jeopardy; distress | n2 |
| 危険運転 | きけんうんてん | dangerous driving; reckless driving | |
| 経済危機 | けいざいきき | economic crisis | |
| 危なげない | あぶなげない | safe; certain | |
| 危険防止 | きけんぼうし | hazard prevention | |
| 危岩 | きがん | steep, towering rock | |
| 危絵 | あぶなえ | suggestive, erotic, or indecent ukiyo-e woodblock print | |
| 危宿 | うみやめぼし | Chinese "rooftop" constellation (one of the 28 mansions) | |
| 危険視 | きけんし | regarding as dangerous; identifying as a threat | |
| 危篤状態 | きとくじょうたい | critical condition | |
| 危険因子 | きけんいんし | risk factor | |
| 金融危機 | きんゆうきき | financial crisis | |
| 危険信号 | きけんしんごう | danger signal; red light | |
| 危険負担 | きけんふたん | risk-bearing | |
| 絶滅危機 | ぜつめつきき | endangerment (of a species) | |
| 経営危機 | けいえいきき | management crisis (of a business); financial difficulty | |
| 危機対応 | ききたいおう | crisis response; emergency response | |
| 危機意識 | ききいしき | crisis awareness; sense of impending crisis | |
| 危険回避 | きけんかいひ | risk aversion; hedging; danger avoidance | |
| 危険地域 | きけんちいき | critical section | |
| 政治危機 | せいじきき | political crisis | |
| 電力危機 | でんりょくきき | power crisis | |
| 危座 | きざ | sitting up straight | |
| 危険率 | きけんりつ | risk ratio; percentage of risk; hazard rate; significance level | |
| 危機言語 | ききげんご | endangered language | |
| 危険分子 | きけんぶんし | dangerous element; person who poses a high risk | |
| 危険地帯 | きけんちたい | danger zone | |
| 難民危機 | なんみんきき | refugee crisis | |
| 危い | あぶない | dangerous; risky; hazardous; perilous | n5 |
| 危ぐ | きぐ | apprehension; misgivings; uneasiness; fear | n2 |
| 危道 | きどう | dangerous road | n1 |
| 危坐 | きざ | sitting up straight | |
| 危峰 | きほう | high, steep peak | |
| 危巌 | きがん | steep, towering rock | |
| 危弁 | きべん | sophistry; sophism | |
| 危極 | ききょく | crisis; grave danger; serious depression | |
| 危気 | あぶなげ | seeming dangerous; risky; unsafe; chancy | |
| 危疑 | きぎ | fear; misgivings | |
| 危うく | あやうく | barely; narrowly; almost; nearly | |
| 危なく | あぶなく | nearly; almost; on the point of (doing) | |
| 危な気 | あぶなげ | seeming dangerous; risky; unsafe; chancy | |
| 危な絵 | あぶなえ | suggestive, erotic, or indecent ukiyo-e woodblock print | |
| 危める | あやめる | to wound; to murder | |
| 危険域 | きけんいき | critical section | |
| 水危機 | みずきき | water crisis; water scarcity | |
| 信用危機 | しんようきき | credit crunch | |
| 危ながる | あぶながる | to act afraid (of); to appear to feel uneasy (about); to shrink (from) | |
| 危な危な | あぶなあぶな | timidly | |
| 危機一発 | ききいっぱつ | by a hair's breadth; in the nick of time; touch and go; close call | |
| 危機打者 | ききだしゃ | pinch hitter | |
| 危機神学 | ききしんがく | crisis theology | |
| 危機突破 | ききとっぱ | crisis relief | |
| 危険情報 | きけんじょうほう | information about a danger; danger warning; risk information | |
| 危険手当 | きけんてあて | hazard pay | |
| 危険角度 | きけんかくど | critical angle | |
| 危険領域 | きけんりょういき | critical area; region | |
| 危難失踪 | きなんしっそう | disappearance (longer than one year after an accident or disaster); missing and presumed dead | |
| 原発危機 | げんぱつきき | nuclear crisis; nuclear power-plant crisis | |
| 気候危機 | きこうきき | climate crisis | |
| 気象危機 | きしょうきき | climate crisis | |
| 湾岸危機 | わんがんきき | Gulf War (1990); Persian Gulf crisis | |
| 財政危機 | ざいせいきき | economic crisis; financial crisis | |
| 身の危険 | みのきけん | danger to oneself; (fear of) one's physical safety | |
| 非危険物 | ひきけんぶつ | non-hazardous material; non-dangerous goods | |
| 食糧危機 | しょくりょうきき | food crisis; food-supply crisis | |
| 二重の危険 | にじゅうのきけん | double jeopardy | |
| 危なかしい | あぶなかしい | dangerous; critical; grave; uncertain | |
| 危機管理室 | ききかんりしつ | situation room; crisis management office | |
| 危険な関係 | きけんなかんけい | Dangerous Liaisons (novel, film); Les Liaisons dangereuses | |
| 危険に晒す | きけんにさらす | to expose to danger; to imperil; to jeopardize | |
| 危険に曝す | きけんにさらす | to expose to danger; to imperil; to jeopardize | |
| 危険を冒す | きけんをおかす | to brave a danger; to take a risk | |
| 危険手当て | きけんてあて | hazard pay | |
| 危険極まる | きけんきわまる | to be extremely dangerous | |
| 存亡の危機 | そんぼうのきき | existential threat; life-or-death crisis | |
| 政治的危機 | せいじてききき | political crisis | |
| 準絶滅危惧 | じゅんぜつめつきぐ | near-threatened (species) | |
| 絶滅危惧種 | ぜつめつきぐしゅ | endangered species | |
| 絶滅危険種 | ぜつめつきけんしゅ | endangered species | |
| 道徳的危険 | どうとくてききけん | moral hazard | |
| キューバ危機 | キューバきき | Cuban Missile Crisis (1962) | |
| 世界金融危機 | せかいきんゆうきき | world financial crisis (2007-2008); global financial crisis; GFC | |
| 企業危機管理 | きぎょうききかんり | corporate risk management | |
| 健康危機管理 | けんこうききかんり | health risk management | |
| 危害を加える | きがいをくわえる | to harm; to cause harm to | |
| 危急存亡の時 | ききゅうそんぼうのとき | crisis; critical moment; critical time | |
| 危急存亡の秋 | ききゅうそんぼうのとき | crisis; critical moment; critical time | |
| 危機を脱する | ききをだっする | to escape danger | |
| 危殆に瀕する | きたいにひんする | to face danger; to fall into crisis | |
| 危険きわまる | きけんきわまる | to be extremely dangerous | |
| 危険にさらす | きけんにさらす | to expose to danger; to imperil; to jeopardize | |
| 危険をおかす | きけんをおかす | to brave a danger; to take a risk | |
| 危険を顧みず | きけんをかえりみず | heedless of danger; braving dangers | |
| 危険ドラック | きけんドラッグ | designer drug; synthetic drug; quasi-legal drug; dangerous drug | |
| 危険ドラッグ | きけんドラッグ | designer drug; synthetic drug; quasi-legal drug; dangerous drug | |
| 危険予知訓練 | きけんよちくんれん | work injury prevention training; accident awareness training; hazard prediction training | |
| 存立危機事態 | そんりつききじたい | threat to national existence | |
| 海外危険情報 | かいがいきけんじょうほう | overseas risk information; overseas danger warning | |
| 消滅危機言語 | しょうめつききげんご | near-extinct language; seriously endangered language | |
| 特定危険部位 | とくていきけんぶい | specified risk material; SRM | |
| 累卵の危うき | るいらんのあやうき | imminent danger; threatened ruin | |
| エネルギー危機 | エネルギーきき | energy crisis; energy crunch | |
| 危ない橋を渡る | あぶないはしをわたる | to tread on thin ice; to go out on a limb; to walk a tightrope; to take risks | |
| 危機管理委員会 | ききかんりいいんかい | crisis committee | |
| 危険極まりない | きけんきわまりない | extremely dangerous; full of peril | |
| 危険極まり無い | きけんきわまりない | extremely dangerous; full of peril | |
| 危険運転致死罪 | きけんうんてんちしざい | vehicular manslaughter | |
| 第一次石油危機 | だいいちじせきゆきき | first oil crisis | |
| 危険きわまりない | きけんきわまりない | extremely dangerous; full of peril | |
| 危険をかえりみず | きけんをかえりみず | heedless of danger; braving dangers | |
| 危害分析重要管理点 | きがいぶんせきじゅうようかんりてん | Hazard Analysis Critical Control Point; HACCP | |
| 特定危険指定暴力団 | とくていきけんしていぼうりょくだん | especially dangerous designated criminal group; especially dangerous designated boryokudan | |
| 君子危うきに近よらず | くんしあやうきにちかよらず | a wise man keeps away from danger | |
| 君子危うきに近寄らず | くんしあやうきにちかよらず | a wise man keeps away from danger | |
| 敵を知り己を知らば百戦危うからず | てきをしりおのれをしればひゃくせんあやうからず | know your enemy, know thyself, and you shall not fear a hundred battles | |
| 敵を知り己を知れば百戦危うからず | てきをしりおのれをしればひゃくせんあやうからず | know your enemy, know thyself, and you shall not fear a hundred battles | |