Quintuple VS
Synonym Boundary: "開始", "言い出す", "着手する", "着工", "始まる"
All represent the core concept "start", but require precise selection.
Japanese Option A
開始
かいし (kaishi)
N3 / CEFR
Japanese Option B
言い出す
いいだす (iidasu)
N3 / CEFR
Japanese Option C
着手する
ちゃくしゅする (chakushusuru)
N2 / CEFR
Japanese Option D
着工
ちゃっこう (chakkou)
N2 / CEFR
Japanese Option E
始まる
はじまる (hajimaru)
A1 / CEFR
Quintuple VS Nuance Contrast & Social Differences
When expressing "start" in Japanese, you must carefully distinguish between "開始", "言い出す", "着手する", "着工", "始まる" based on context.
- 開始 (かいし (kaishi) - Level: N3): Maps to "start; commencement; beginning" and is used when Often used for events, meetings, projects, or formal procedures. Can be a noun.
- 言い出す (いいだす (iidasu) - Level: N3): Maps to "to start talking, to bring up (a topic), to suggest" and is used when Often implies initiating a conversation or being the first to speak about something, sometimes after hesitation or difficulty. 誰かが最初に話すこと、または躊躇した後に何かを話すことを意味します。.
- 着手する (ちゃくしゅする (chakushusuru) - Level: N2): Maps to "to start work, to embark on, to commence" and is used when Often used for formally or significantly beginning a project, task, or investigation..
- 着工 (ちゃっこう (chakkou) - Level: N2): Maps to "start of construction" and is used when Specifically refers to the commencement of construction work on a building or project. Often used with 「する」.
- 始まる (はじまる (hajimaru) - Level: A1): Maps to "to start" and is used when Essential structural term in CEFR A1 vocabulary syllabus..
Context for "開始"
会議は午後1時に開始します。
The meeting will start at 1 PM.
Context for "言い出す"
会議で誰も意見を言い出せなかった。
No one could bring up their opinion in the meeting.
Context for "着手する"
新しい研究プロジェクトは来月から着手される予定だ。
The new research project is scheduled to commence next month.
Context for "着工"
新しいビルの建設は来月着工する予定だ。
Construction of the new building is scheduled to start next month.
Context for "始まる"
毎日、日本語を練習するために始まる。
Every day, I start to practice Japanese.
Synonym Mastery Challenge
Which Japanese word perfectly fits this blank space?
Fill in the blank: "会議は午後1時に ＿＿＿ します。" (Meaning: "The meeting will start at 1 PM.")
🎉 Correct Answer!
Remember: "開始" is correct here because it represents "start; commencement; beginning" in the context: "The meeting will start at 1 PM.".