🦅 Project Eagle
Quintuple VS

Synonym Boundary: "不良", "不調", "不運", "凶作", "陋習"

All represent the core concept "bad", but require precise selection.

Japanese Option A

不良

ふりょう (furyō)
N3 / CEFR
Japanese Option B

不調

ふちょう (fuchou)
N2 / CEFR
Japanese Option C

不運

ふうん (fuun)
N2 / CEFR
Japanese Option D

凶作

きょうさく (kyōsaku)
N2 / CEFR
Japanese Option E

陋習

ろうしゅう (rōshū)
N1 / CEFR

Quintuple VS Nuance Contrast & Social Differences

When expressing "bad" in Japanese, you must carefully distinguish between "不良", "不調", "不運", "凶作", "陋習" based on context.
  • 不良 (ふりょう (furyō) - Level: N3): Maps to "bad, poor (quality); delinquent (person); defect" and is used when Can be a noun meaning a defect or a delinquent person.
  • 不調 (ふちょう (fuchou) - Level: N2): Maps to "bad condition, poor form, out of order, discord" and is used when Refers to a poor physical or mental condition.
  • 不運 (ふうん (fuun) - Level: N2): Maps to "bad luck, misfortune" and is used when 予期せぬ悪い出来事や、自分の意図しないところで生じる不幸な状況を指します。形容動詞「不運な.
  • 凶作 (きょうさく (kyōsaku) - Level: N2): Maps to "bad harvest, poor crop, crop failure" and is used when Refers to a poor agricultural yield due to unfavorable weather, disease, or other factors, indicating a severe reduction in harvest..
  • 陋習 (ろうしゅう (rōshū) - Level: N1): Maps to "bad custom; evil practice; obsolete practice" and is used when Refers to old, outdated, or harmful customs and practices that should be abolished. Has a formal and slightly critical tone..
Mixing these up can easily lead to unnatural translations. Refer to the bilingual context cards below to master the boundaries!
Context for "不良"
この製品には不良がありました。
This product had a defect.
Context for "不調"
最近、体の不調が続いていて病院に行った。
I've been feeling unwell lately, so I went to the hospital.
Context for "不運"
彼は不運にも事故に巻き込まれてしまった。
He unfortunately got caught up in an accident.
Context for "凶作"
今年は長雨のせいで米が凶作だった。
This year, the rice crop was poor due to the long rain.
Context for "陋習"
その会社には長年続いている陋習がいくつか残っている。
Several long-standing bad customs still remain in that company.

Synonym Mastery Challenge

Which Japanese word perfectly fits this blank space?

Fill in the blank: "この製品には ___ がありました。" (Meaning: "This product had a defect.")
🎉 Correct Answer!

Remember: "不良" is correct here because it represents "bad, poor (quality); delinquent (person); defect" in the context: "This product had a defect.".

💡 Practice with AI! Live

Don't just read. Practice speaking this grammar with our interactive AI coach for free!

Try AI Speaking 👉