Synonym Nuance VS
How to say "Irregular" in Japanese
Both words can translate to "irregular", but which should you choose?
Japanese Option A
不規則な
ふきそくな (fukisokuna)
N3 / CEFR Syllabus
VS
Japanese Option B
不定期
ふていき (futeiki)
N2 / CEFR Syllabus
Nuance Contrast & Translation Difference
When translating "irregular" into Japanese, you must choose carefully between 不規則な and 不定期.
In Japanese, 不規則な (ふきそくな (fukisokuna)) is typically associated with "irregular, unsystematic" (Syllabus Level: N3) and represents Often used to describe habits, schedules, or patterns that are not regular. Can imply something is unhealthy or unorganized. It is a na-adjective..
On the other hand, 不定期 (ふていき (futeiki)) maps to "irregular, unscheduled, intermittent" (Syllabus Level: N2) and represents Used to describe events or occurrences that do not happen at fixed or regular intervals. Often seen in '不定期開催'. A literal translation of "irregular" can often sound unnatural to native Japanese speakers if mixed up!
Bilingual Context for "不規則な"
彼の生活は不規則です。
His lifestyle is irregular.
Bilingual Context for "不定期"
この雑誌は不定期で発行されます。
This magazine is published irregularly.
Nuance Mastery Quiz
Which Japanese word perfectly fits this blank space?
Fill in the blank: "彼の生活は不規則です。" (Meaning: "His lifestyle is irregular.")
🎉 Correct Answer!
Remember: "不規則な" fits here because it means "irregular, unsystematic" in the context of: "His lifestyle is irregular.". "不定期" represents "irregular, unscheduled, intermittent".