悪あっ化か

あ

っ

か

Common wordJLPTN2Freq.FrequencyTop 5,000

悪化する · noun or participle which takes 'suru'

Form	Positive	Negative
Dictionary	悪あっ化かする	悪あっ化かしない
Polite	悪あっ化かします	悪あっ化かしません
Past polite	悪あっ化かしました	悪あっ化かしませんでした
Past	悪あっ化かした	悪あっ化かしなかった
Te-form	悪あっ化かして	悪あっ化かしないで
Desire	悪あっ化かしたい	悪あっ化かしたくない
Potential	悪あっ化かできる	悪あっ化かできない
Passive	悪あっ化かされる	悪あっ化かされない
Causative	悪あっ化かさせる	悪あっ化かさせない
Causative passive	悪あっ化かさせられる	悪あっ化かさせられない
Volitional	悪あっ化かしよう
Polite volitional	悪あっ化かしましょう
Imperative	悪あっ化かしろ	悪あっ化かするな
Conditional	悪あっ化かすれば	悪あっ化かしなければ
Tara conditional	悪あっ化かしたら	悪あっ化かしなかったら

Meanings

noun, noun or participle which takes 'suru', intransitive verb

deterioration; worsening; aggravation

Used for conditions, situations, relationships, or health becoming worse. Often appears as 悪化する (intransitive) or 悪化させる (transitive).

病びょう状じょうが急きゅうに悪あっ化かした。
His condition suddenly worsened.
両りょう国こくの関かん係けいはこれ以い上じょう悪あっ化かさせてはいけない。
We must not let relations between the two countries deteriorate any further.

See all 259 example sentences ›

Usage patterns

〈事こと〉が悪あっ化かするfor a condition or situation to worsen
彼かれの病びょう状じょうが急きゅうに悪あっ化かした。
His medical condition suddenly worsened.
〈事こと〉を悪あっ化かさせるto make a condition or situation worse
喫きつ煙えんは健けん康こう状じょう態たいを悪あっ化かさせる。
Smoking makes one's health condition worse.
急きゅう速そくに悪あっ化かするto deteriorate rapidly
天てん候こうが急きゅう速そくに悪あっ化かしてきた。
The weather has started to deteriorate rapidly.

Kanji

悪bad, vice, rascal
化change, take the form of, influence

Transitive / intransitive

悪化 itself is used both intransitively as 悪化する, meaning a condition worsens on its own (病状が悪化する, 'the condition worsened'), and transitively as 悪化させる, meaning someone or something causes it to worsen (無理な生活が病状を悪化させた, 'the unreasonable lifestyle worsened the condition').

Related words· 13

悪わるくなる
悪くなる is the everyday, conversational way to say something got worse, while 悪化 is the more formal term used in news, medical, or business contexts.
劣れっ化か
劣化 refers specifically to physical or material quality degrading over time (e.g. parts, batteries), while 悪化 covers a broader range of situations, health, and relationships getting worse.
低てい下かN2
低下 emphasizes a drop in level or function (e.g. 視力低下, 生産性低下), whereas 悪化 emphasizes a shift toward a worse or more negative state overall.
落おち込こむN2
悪化する is used broadly for anything worsening (conditions, symptoms, relations), while 落ち込む in this sense is specifically about economic figures or performance dropping.

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改かい悪あくN1
改悪 specifically refers to a deliberate revision or reform that makes something worse, while 悪化 describes a general worsening of a situation without implying an intentional change.
重おもる
悪化する is the common, neutral verb for an illness or situation worsening, while 重る is an older, more literary way to say the same thing.
こじらせるN1
悪化する is a general intransitive verb meaning 'to worsen' or 'deteriorate', while 拗らせる is transitive and specifically implies someone's stubbornness or neglect made things worse.
激げき化か
悪化 refers to a general worsening or deterioration in condition, while 激化 specifically highlights an increase in the intensity or severity of a conflict, competition, or activity.
エスカレート
悪化 means a situation is simply getting worse, while エスカレート emphasizes a spiraling, step-by-step intensification of a conflict or problem.
深しん刻こく化かN2
悪化 is a general term for a situation worsening, while 深刻化 stresses that it is reaching a critical or grave level.
冷ひえ込こむN2
悪化する is a general word for conditions worsening in any domain, whereas 冷え込む specifically evokes a 'cooling' image applied to relations, economy, or enthusiasm.
加か重じゅう
悪化 means a general worsening of a situation, whereas 加重 specifically points to an increase in weight, burden, or severity (often in legal or statistical contexts).
こじれるN1
悪化する simply means to worsen and can describe health, weather, or conditions in general, while 拗れる specifically implies a situation has become tangled or gone sour due to friction.

Opposites· 11

改かい善ぜんN3
改善 means an improvement or getting better, the direct opposite of 悪化, a worsening or getting worse.
維い持じN2
維持 means keeping a condition stable, while 悪化 means that condition worsening or deteriorating.
治ち癒ゆ
悪化 means a condition worsening, the opposite of 治癒, which means it healing.

Show 8 more

好こう転てんN1
悪化 describes a situation getting worse, the direct opposite of 好転, which describes a situation turning for the better.
正せい常じょう化か
悪化 means a situation getting worse, the direct opposite of 正常化, which means returning to a normal state.
持もち直なおすN2
悪化する means a condition worsens, the opposite of 持ち直す meaning a condition improves after a decline.
改かい良りょうN2
改良 means making something better, while 悪化 means a situation or condition getting worse.
小しょう康こう
小康 refers to a situation or illness stabilizing or easing, while 悪化 refers to it getting worse.
回かい復ふくN3
悪化 means a situation getting worse, the direct opposite of 回復 (getting better).
軽けい快かいN1
悪化 means a condition worsens, the opposite of 軽快 when it describes an illness improving.
緩かん和わN1
悪化 describes a situation or symptom getting worse, contrasting with 緩和's sense of a situation improving or easing.

Don't confuse with

激げき化か
激化 means a conflict or situation intensifying in severity, whereas 悪化 means a condition or state simply getting worse, without necessarily implying escalation.
退たい化かN2
悪化 simply means a situation getting worse, while 退化 specifically implies reverting to an earlier, less developed condition.

Word family

急きゅう転てん悪あっ化か
sudden turn for the worse; sudden deterioration
景けい気き悪あっ化か
economic downturn; worsening economy
業ぎょう績せき悪あっ化か
downturn in business performance; deterioration of results
環かん境きょう悪あっ化か
environmental degradation; deterioration of the environment

Etymology

Compound of 悪 (bad) and 化 (change, -ization). The reading あっか is a regular sound change from あく + か.