Synonym Comparison
The Nuance Difference: "大変" vs "開く"
Master the exact conceptual boundary between these Japanese terms.
Japanese Term A
大変
たいへん (taihen)
N5 / CEFR Syllabus
VS
Japanese Term B
開く
あく (aku)
N4 / CEFR Syllabus
Nuance Contrast & Social Differences
In Japanese, both 大変 and 開く are often translated to English but have distinct usages.
大変 (たいへん (taihen)) represents "tough, difficult, serious (na-adjective); very, extremely (adverb)" (Level: N5) and typically represents Can be an な-adjective.
On the other hand, 開く (あく (aku)) translates to "to open (intransitive)" (Level: N4) and is used for Intransitive verb. Used when something opens on its own or is opened by an unspecified agent. Mixing these up can sound unnatural to native Japanese speakers!
Bilingual Sentence for "大変"
この仕事は時間がかかって大変です。
This job takes a long time and is tough.
Bilingual Sentence for "開く"
ドアが自動的に開きます。
The door opens automatically.
Nuance Mastery Quiz
Which Japanese word perfectly fits this blank space?
Fill in the blank: "この仕事は時間がかかって ＿＿＿ です。" (Meaning: "This job takes a long time and is tough.")
🎉 Correct Answer!
Remember: "大変" fits here because it represents "tough, difficult, serious (na-adjective); very, extremely (adverb)" in the context: "This job takes a long time and is tough.".