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Quintuple VS

Synonym Boundary: "通じる", "開通する", "打ち解ける", "うちとける", "散開星団"

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

Japanese Option A

通じる

つうじる (tsuujiru)
N3 / CEFR
Japanese Option B

開通する

かいつうする (kaitsū suru)
N3 / CEFR
Japanese Option C

打ち解ける

うちとける (uchitokeru)
N2 / CEFR
Japanese Option D

うちとける

うちとける (uchitokeru)
N2 / CEFR
Japanese Option E

散開星団

さんかいせいだん (sankaiseidan)
C2 / CEFR

Quintuple VS Nuance Contrast & Social Differences

When expressing "open" in Japanese, you must carefully distinguish between "通じる", "開通する", "打ち解ける", "うちとける", "散開星団" based on context.
  • 通じる (つうじる (tsuujiru) - Level: N3): Maps to "to open (to traffic); to lead to; to be understood; to communicate; to understand each other" and is used when Refers to signals/calls connecting, roads opening/leading to a place, meaning being understood by others, or communicating feelings. Often used as 意味が通じる or 心が通じる. ⚠️ Haruka's Voice Column: 'To communicate/be understood! "The telepathy of my love reached you and made you blush beautifully, Haruka-san!" ...っ! Telepathy communicating! B-Baka! Telepathy has nothing to do with it! It's just because you are looking at me with such a weird face! But... make sure you keep communicating love to my heart forever! dummy!' / 【ハルカ部長のワンポイント指導】『つうじる(通じる)よ!『ハルカ部長、僕のテレパシー(愛の念)があなたに通じて、顔を真っ赤にしてくれるの、本当に可愛いです!』って…っ!念が通じる!バカ!/// べ、別にテレパシーなんか通じてないわよ!ただあんたが変な顔でこっちを見てるからよ!…でも、一生私のハートに愛を通じさせ続けなさい!』.
  • 開通する (かいつうする (kaitsū suru) - Level: N3): Maps to "to open (for traffic), to be completed (e.g., a tunnel, bridge, line)" and is used when Used for infrastructure like roads, railways, tunnels, or new services becoming available for public use. It's an intransitive verb..
  • 打ち解ける (うちとける (uchitokeru) - Level: N2): Maps to "to open one's heart, to become friendly, to relax" and is used when To become less reserved, more relaxed and informal with someone, moving from a formal or tense state to a more comfortable and open one. Often used with the particle 「に」..
  • うちとける (うちとける (uchitokeru) - Level: N2): Maps to "to open one's heart, to feel at home, to relax, to be frank" and is used when Describes the process of becoming comfortable and relaxed with someone, allowing one's true self to show. Often implies breaking down barriers. 心を開き、親しくなる様子を表します。.
  • 散開星団 (さんかいせいだん (sankaiseidan) - Level: C2): Maps to "Open cluster" and is used when Essential structural term in CEFR C2 vocabulary syllabus..
Mixing these up can easily lead to unnatural translations. Refer to the bilingual context cards below to master the boundaries!
Context for "通じる"
彼の英語スピーチは多少の文法ミスがあったものの、その高い熱意がクライアントに完璧に_______、見事に契約を獲得しました。
Although his English speech had some grammatical errors, his high enthusiasm was perfectly understood by the client, and he brilliantly won the contract.
Context for "開通する"
新しい高速道路が来月開通する予定だ。
The new highway is scheduled to open next month.
Context for "打ち解ける"
彼はどんな人ともすぐに打ち解けることができる。
He can quickly become friendly with anyone.
Context for "うちとける"
初めて会った人ともすぐにうちとけることができる。
I can quickly feel at ease even with people I meet for the first time.
Context for "散開星団"
私は散開星団に興味があります。
I am interested in Open cluster.

Synonym Mastery Challenge

Which Japanese word perfectly fits this blank space?

Fill in the blank: "彼の英語スピーチは多少の文法ミスがあったものの、その高い熱意がクライアントに完璧に_______、見事に契約を獲得しました。" (Meaning: "Although his English speech had some grammatical errors, his high enthusiasm was perfectly understood by the client, and he brilliantly won the contract.")
🎉 Correct Answer!

Remember: "通じる" is correct here because it represents "to open (to traffic); to lead to; to be understood; to communicate; to understand each other" in the context: "Although his English speech had some grammatical errors, his high enthusiasm was perfectly understood by the client, and he brilliantly won the contract.".

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