To finalize a choice or plan after consideration.
Word in 30 Seconds
- To make a firm choice or decision.
- Used in both formal and informal contexts.
- Indicates the final result of a selection process.
Overview
- 1概要:「決定する」は、複数の選択肢や可能性の中から一つを選び、それを確定させる行為を指します。意志決定や計画の立案など、結果を出すプロセスにおいて不可欠な言葉です。2) 使用パターン:主に「~を決定する」という形で目的語をとります。また、「~することに決定した」のように、動詞の辞書形と組み合わせて使われることも非常に多いです。3) 一般的な文脈:ビジネスでの会議、個人の予定調整、政府や組織の方針発表など、公私問わずあらゆる場面で使われます。4) 類語との比較:「決める」はより口語的で日常的です。「決定する」は「決める」よりも硬い響きがあり、公的な文書やニュース、ビジネスの場で好まれます。また、「確定する」は「すでに決まったことが動かない」という状態に重点を置くのに対し、「決定する」は「決めるという行為そのもの」に焦点を当てます。
Examples
旅行の日程を決定する。
everydayDecide on the travel schedule.
新しい役員を決定いたしました。
formalWe have decided on the new board members.
何にするか決定した?
informalHave you decided what to do?
調査結果に基づき、方針を決定する。
academicDetermine the policy based on the survey results.
Common Collocations
Common Phrases
決定を下す
To make a decision
決定を仰ぐ
To ask for a decision
即決する
To decide immediately
Often Confused With
This is the more common, informal version of 'decide'. It is used in almost all daily life situations.
This implies that something is fixed and unchangeable. It focuses on the state of being final rather than the act of choosing.
Grammar Patterns
How to Use It
Usage Notes
Use '決定する' for formal or written communication. It carries a sense of responsibility and finality. In casual speech, '決める' is much more natural.
Common Mistakes
Do not use '決定する' for minor personal choices like what to eat for lunch, as it sounds too heavy. It is also often misused by adding unnecessary particles; remember it takes 'を'.
Tips
Use for formal business settings
When writing business emails or reports, prefer '決定する' over '決める' to sound more professional and authoritative.
Avoid overusing in casual speech
Using '決定する' in casual conversations with friends can sound overly stiff or robotic. Use '決める' in those situations.
Emphasis on consensus
In Japanese culture, the process of '決定する' often involves 'nemawashi' or prior consultation to reach a consensus before the final decision.
Word Origin
Derived from Sino-Japanese roots where '決' means to decide and '定' means to fix or settle.
Cultural Context
In Japanese business culture, the 'decision' is often the end of a long process of consensus building. Therefore, '決定する' carries significant weight.
Memory Tip
Think of a judge hitting a gavel. That final 'bang' is the action of '決定する'.
Frequently Asked Questions
4 questions「決める」は日常会話で広く使われる動詞です。「決定する」はそれよりも硬い表現で、ビジネスや公的な場、ニュースなどでよく使われます。
「決定した」となります。すでに決まった事実を伝える際に使用します。
主に「~を決定する」と、「を」を使って目的語を導きます。
はい、「決定を下す」「決定を待つ」のように名詞形としても頻繁に使われます。
Test Yourself
会議で新しいプロジェクトの方針を___。
文脈に合わせて過去形にする必要があります。
Score: /1
Summary
To finalize a choice or plan after consideration.
- To make a firm choice or decision.
- Used in both formal and informal contexts.
- Indicates the final result of a selection process.
Use for formal business settings
When writing business emails or reports, prefer '決定する' over '決める' to sound more professional and authoritative.
Avoid overusing in casual speech
Using '決定する' in casual conversations with friends can sound overly stiff or robotic. Use '決める' in those situations.
Emphasis on consensus
In Japanese culture, the process of '決定する' often involves 'nemawashi' or prior consultation to reach a consensus before the final decision.
Examples
4 of 4旅行の日程を決定する。
Decide on the travel schedule.
新しい役員を決定いたしました。
We have decided on the new board members.
何にするか決定した?
Have you decided what to do?
調査結果に基づき、方針を決定する。
Determine the policy based on the survey results.
Related Content
This Word in Other Languages
Related Phrases
Related Vocabulary
More general words
いくつか
B1An unspecified small number of things; some, a few.
ちょっと
A2A little; a moment; a bit. Small amount or short time.
すこし
A2A little; a few.
さっき
A2A little while ago; a short time past.
能力
A1Nouryoku refers to the mental or physical power, skill, or capacity required to perform a specific task or function. It can describe both innate talent and skills acquired through learning and practice.
異常
A1A word used to describe something that deviates from the normal state, standard, or expected pattern. It often implies a problem, malfunction, or an extraordinary occurrence that requires attention or investigation.
~について
A2About, concerning; indicates topic.
〜について
B1About, concerning; on the subject of.
~ぐらい
A2about, approximately
ぐらい
A2About; approximately; to the extent of.