不定期
Describes something that does not happen at fixed intervals or according to a set schedule. It is commonly used to indicate that events, publications, or services occur randomly or whenever necessary rather than on a routine basis.
예시
3 / 5この雑誌は不定期に発行されています。
This magazine is published irregularly.
不定期なメンテナンスのため、サービスを停止いたします。
Service will be suspended due to irregular maintenance.
あのカフェ、不定期で休みだから気をつけて。
That cafe closes irregularly, so be careful.
어휘 가족
암기 팁
Break it down: 不 (Fu - Not) + 定期 (Teiki - Fixed period/Regular). If you know 'Teikiken' (a commuter pass for a fixed period), this is just the 'not' version of that schedule.
빠른 퀴즈
このイベントは（ ）に開催されるので、スケジュールが決まっていません。
정답!
정답은: 不定期
예시
この雑誌は不定期に発行されています。
everydayThis magazine is published irregularly.
不定期なメンテナンスのため、サービスを停止いたします。
formalService will be suspended due to irregular maintenance.
あのカフェ、不定期で休みだから気をつけて。
informalThat cafe closes irregularly, so be careful.
不定期な脈拍の変動がグラフに示されている。
academicIrregular fluctuations in the pulse are shown on the graph.
弊社では不定期の社内会議を行っております。
businessOur company holds internal meetings on an irregular basis.
어휘 가족
자주 쓰는 조합
자주 쓰는 구문
不定期での発行
publishing on an irregular basis
不定期な休み
unscheduled holidays
不定期船
tramp steamer / irregular ship
자주 혼동되는 단어
Rinji means 'temporary' or 'special/extraordinary' for a specific occasion, while futeiki refers specifically to the lack of a recurring schedule.
Tamani is an adverb meaning 'occasionally' (low frequency), whereas futeiki focuses on the absence of a fixed pattern.
사용 참고사항
It is often used as a 'na-adjective' (futeiki-na) or with the particle 'ni' to function as an adverb. In business, it often appears in compound nouns like 'futeiki-kaisa' (irregularly held).
자주 하는 실수
Learners sometimes use this word to mean 'rarely,' but it actually means 'not at a fixed time.' Something can happen frequently but still be 'futeiki' if the timing isn't predictable.
암기 팁
Break it down: 不 (Fu - Not) + 定期 (Teiki - Fixed period/Regular). If you know 'Teikiken' (a commuter pass for a fixed period), this is just the 'not' version of that schedule.
어원
Composed of the Sinitic roots 'Bu' (negation), 'Tei' (fix/settle), and 'Ki' (period/time).
문법 패턴
문화적 맥락
In Japan, many small, independent shops or family-owned restaurants list their holidays as 'futeiki-kyubi,' meaning they close whenever they need to rather than on a set day like every Monday.
빠른 퀴즈
このイベントは（ ）に開催されるので、スケジュールが決まっていません。
정답!
정답은: 不定期
관련 어휘
관련 단어
勾留
A1A legal term referring to the court-ordered detention of a suspect or defendant. It is used to keep someone in custody to prevent them from fleeing or destroying evidence during an investigation or trial.
服役
A1The act of serving a prison sentence as punishment for a crime, or performing mandatory military service. In modern Japan, it is most commonly used in a legal context regarding imprisonment.
死刑
A1The death penalty or capital punishment, representing the legal execution of a person as a state-sanctioned punishment for a severe crime. It is a heavy legal term used in discussions about law, human rights, and the justice system.
終身刑
A1A legal sentence that requires a person to remain in prison for the rest of their natural life. It is the most severe punishment in many jurisdictions, excluding the death penalty.
無罪
A1A legal term meaning 'not guilty' or 'innocent' in a court of law. It describes the state where a person is found to have no criminal responsibility for a specific charge or act.
冤罪
A1A false accusation or being found guilty for a crime that one did not actually commit. It describes a situation where an innocent person is punished due to a mistake in the legal system or police investigation.
上訴
A1A legal term referring to the act of appealing a lower court's decision to a higher court to seek a reversal or modification. It is a general term that encompasses different types of appeals within the judicial system, such as kouso and joukoku.
示談
A1A settlement made out of court to resolve a dispute or legal issue privately. It usually involves one party paying a sum of money to the other to avoid a formal trial or police intervention.
賠償
A1Compensation given to make up for a loss, damage, or injury caused to another person. It is most commonly used in legal and formal contexts regarding financial settlements for illegal acts or breaches of contract.
補償
A1Compensation or indemnification provided to make up for a loss, damage, or injury. It often refers to monetary payment or actions taken to return someone to a balanced or original state after a negative event.
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