急きゅう変へん

きゅ

う

へ

ん

Common wordJLPTN1Freq.FrequencyTop 50,000

急変する · noun or participle which takes 'suru'

Meanings

Describes a rapid, often unexpected shift in a situation, condition, or state. Used as both a noun and a suru-verb.

emergency; sudden accident

Refers to a sudden, serious incident or crisis, often medical or safety-related. Used as a noun.

〈事こと〉が急きゅう変へんするfor a situation to suddenly change
彼かれの態たい度どが急きゅう変へんした。
His attitude suddenly changed.
天てん候こうが急きゅう変へんするfor the weather to suddenly change
山やまでは天てん候こうが急きゅう変へんすることがある。
In the mountains, the weather can suddenly change.
容よう態だいが急きゅう変へんするfor a patient's condition to suddenly take a turn for the worse
深しん夜や、患かん者じゃの容よう態だいが急きゅう変へんした。
In the middle of the night, the patient's condition suddenly deteriorated.
急きゅう変へんに対たい応おうするto respond to a sudden emergency
看かん護ご師しは急きゅう変へんに迅じん速そくに対たい応おうした。
The nurse responded quickly to the emergency.

変へん化かN3sense 1
変化 is the neutral, general word for change, while 急変 specifically stresses that the change is sudden and often alarming.
激げき変へんN1sense 1
激変 emphasizes how drastic or violent a change is, whereas 急変 emphasizes how abruptly it happens.
突とっ発ぱつ sense 2
突発 describes an incident breaking out unexpectedly, close to 急変's emergency sense but without implying a prior stable state that changed.
変へん調ちょう sense 1
変調 refers to an abnormal shift in condition (often health-related), while 急変 highlights the suddenness of such a shift.

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一いっ転てん
急変 focuses on the suddenness of a change, often in a negative or emergency context (e.g., sudden illness, weather), whereas 一転 can be neutral and often implies a dramatic shift.
急きゅう展てん開かいN2
急変 is typically used for sudden changes in weather, health, or circumstances, while 急展開 refers to a rapid development in a story, situation, or plan.

安あん定ていN3sense 1
安定 means stability or a steady state, the opposite of the sudden upheaval described by 急変.

Compound of 急 (sudden) and 変 (change). The reading is on'yomi.