Use 'osoraku' when you are fairly certain about a prediction.
Word in 30 Seconds
- Used to express a high degree of probability.
- Often paired with 'darou' or 'hazuda' for conjecture.
- More formal and objective than 'tabun'.
Overview
- 1概要：恐らくは、話し手が客観的な根拠や経験に基づいて「十中八九そうなるだろう」という強い推測を述べる際に使用されます。単なる可能性ではなく、かなりの確信を含んでいるのが特徴です。2) 使用パターン：文頭や動詞の前に置かれることが一般的です。「恐らく～だろう」「恐らく～はずだ」という形で、推量の助動詞とセットで使われることが多いです。3) 共通の文脈：ビジネスでの納期確認、日常生活での予定の予測、天候の判断など、未来の出来事に対して広く使われます。4) 類語比較：『たぶん』は日常会話で広く使われるカジュアルな表現ですが、『恐らく』はそれよりも硬い響きがあり、客観的な判断や少しフォーマルな状況に適しています。『おそらく』とひらがなで書くことも非常に一般的です。
Examples
恐らく彼なら間に合うだろう。
everydayHe will probably make it in time.
恐らく本日中に回答できる見込みです。
formalWe will likely be able to reply by the end of the day.
恐らくそうなるはずだよ。
informalThat's probably how it will turn out.
この現象は恐らく気候変動に起因する。
academicThis phenomenon is likely caused by climate change.
Common Collocations
Common Phrases
恐らくそうでしょう
That is probably the case.
恐らく無理だろう
It will probably be impossible.
Often Confused With
Tabun is more casual and indicates a lower level of certainty compared to Osoraku.
This is the same word, just written in Hiragana. It is interchangeable.
Grammar Patterns
How to Use It
Usage Notes
Osoraku is a versatile adverb that fits both formal and informal contexts. It expresses a high degree of confidence in a prediction. It is safer than saying 'zettai' (definitely) when you aren't 100% sure.
Common Mistakes
Learners often use Osoraku with past tense facts that are confirmed. Remember it is for predictions. Avoid using it if you have already seen the result.
Tips
Pair with conjecture forms
Always pair 'osoraku' with 'darou', 'deshou', or 'hazuda'. This reinforces the predictive nature of the adverb.
Avoid absolute certainty
Although it implies high probability, it is still a guess. Do not use it if you have 100% confirmed facts.
Softening communication
Japanese culture values indirectness. Using 'osoraku' helps soften a negative prediction, making it sound less harsh.
Word Origin
Derived from the verb 'osoreru' (to fear/be anxious). Originally implied a fear of a negative outcome, but evolved to mean any high-probability prediction.
Cultural Context
In Japan, being too assertive can be seen as arrogant. Using 'osoraku' is a polite way to state an opinion without sounding like you are imposing your view on others.
Memory Tip
Think of 'Osoraku' as 'Oh, so likely'. It helps you remember the meaning of high probability.
Frequently Asked Questions
3 questions「たぶん」は日常会話で使われるカジュアルな推量ですが、「恐らく」はより客観的で、確信の度合いが高い場合に適しています。ビジネスシーンでは「恐らく」を使う方が適切です。
はい、使えます。「恐らく間に合わないだろう」のように、否定的な結果を予測する際にも非常によく使われる表現です。
はい、全く問題ありません。むしろ、ひらがなで書く方が一般的で、柔らかい印象を与えるため、手紙やメール、小説などでも頻繁にひらがな表記が見られます。
Test Yourself
明日は___雨が降るだろう。
高い確率の推量を表すため、恐らくが適切です。
Score: /1
Summary
Use 'osoraku' when you are fairly certain about a prediction.
- Used to express a high degree of probability.
- Often paired with 'darou' or 'hazuda' for conjecture.
- More formal and objective than 'tabun'.
Pair with conjecture forms
Always pair 'osoraku' with 'darou', 'deshou', or 'hazuda'. This reinforces the predictive nature of the adverb.
Avoid absolute certainty
Although it implies high probability, it is still a guess. Do not use it if you have 100% confirmed facts.
Softening communication
Japanese culture values indirectness. Using 'osoraku' helps soften a negative prediction, making it sound less harsh.
Examples
4 of 4恐らく彼なら間に合うだろう。
He will probably make it in time.
恐らく本日中に回答できる見込みです。
We will likely be able to reply by the end of the day.
恐らくそうなるはずだよ。
That's probably how it will turn out.
この現象は恐らく気候変動に起因する。
This phenomenon is likely caused by climate change.
Related Content
Related Phrases
Related Vocabulary
More business words
遅めに
B1Late or later than usual.
経理
B1Accounting, accounts department; managing financial records.
的確な
B1Accurate; precise; exactly correct.
達成する
B1To achieve; to accomplish a goal.
活性化
B2To make something more active, lively, or effective. It is used for communities (revitalization), economies (stimulation), and biological processes (activation).
付加
B2To add or attach something extra to an existing thing to increase its value or function.
優位性
B2The state of being in a superior or more advantageous position compared to others; an edge or competitive advantage.
有利
A2Advantageous, favorable; beneficial in a situation.
有利に
B1Advantageously; favorably.
宣伝する
B1To promote; to publicize; to advertise.
