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Quadruple VS

Synonym Boundary: "始める", "開始", "口火を切る", "始まる"

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

Japanese Option A

始める

はじめる (hajimeru)
N4 / CEFR
Japanese Option B

開始

かいし (kaishi)
N3 / CEFR
Japanese Option C

口火を切る

くちびをきる (kuchibi o kiru)
N1 / CEFR
Japanese Option D

始まる

はじまる (hajimaru)
A1 / CEFR

Quadruple VS Nuance Contrast & Social Differences

When expressing "start" in Japanese, you must carefully distinguish between "始める", "開始", "口火を切る", "始まる" based on context.
  • 始める (はじめる (hajimeru) - Level: N4): Maps to "to start (something)" and is used when Transitive verb. To initiate an action or activity..
  • 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.
  • 口火を切る (くちびをきる (kuchibi o kiru) - Level: N1): Maps to "to start (a discussion, dispute, etc.), to lead off, to fire the first shot" and is used when An idiomatic expression meaning to initiate something, especially a discussion, debate, conflict, or a series of events. きっかけを作る、最初に始めることを意味する。比喩的に用いられることが多い。.
  • 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..
Mixing these up can easily lead to unnatural translations. Refer to the bilingual context cards below to master the boundaries!
Context for "始める"
今日から新しい仕事を始めます。
I will start a new job today.
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 "口火を切る"
会議で彼が口火を切ると、活発な議論が始まった。
When he started the discussion at the meeting, a lively debate began.
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: "今日から新しい仕事を始めます。" (Meaning: "I will start a new job today.")
🎉 Correct Answer!

Remember: "始める" is correct here because it represents "to start (something)" in the context: "I will start a new job today.".

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