# 恐らく: probably; likely > Learn how to use 恐らく, a JLPT N2 Japanese grammar point meaning probably; likely, with structure, nuance, examples, mistakes, and comparisons. JLPT level: N2 · Updated: 2026-05-06 · Canonical: https://hane-app.com/blog/n2-osoraku/ **恐らく** means **probably; likely**. It is a **JLPT N2** Japanese grammar pattern used to **make a prediction with moderate certainty**. This grammar point often appears in advanced reading, formal writing, notices, essays, and careful conversation. If you want to read Japanese with more nuance, **恐らく** is a useful pattern to learn because it shows the speaker's logic, stance, or emphasis. ## What does 恐らく mean? Use **恐らく** when you want to **make a prediction with moderate certainty**. Natural translations include: - probably; likely - depending on context - in a way that matches the speaker's emphasis The best translation depends on the sentence. Focus first on what relationship the pattern creates between the ideas. ## How to form 恐らく 恐らく + sentence Examples of the pattern: - 恐らく明日は雨でしょう。 - 彼は恐らくもう帰ったと思います。 - 恐らくこの方法が一番安全です。 In JLPT questions, pay close attention to the word immediately before the grammar point. Many wrong answers use a similar meaning but attach to the wrong form. ## When is 恐らく used? Use **恐らく** in situations like: - reading formal explanations, announcements, or essays - making a point more precise than a basic grammar pattern would - connecting two ideas with a clear nuance Tone and register: - usually neutral to formal, depending on the expression - common in JLPT N2 reading passages, news, notices, and business-like writing ## 恐らく example sentences - 恐らく明日は雨でしょう。 — It will probably rain tomorrow. - 彼は恐らくもう帰ったと思います。 — I think he has probably already gone home. - 恐らくこの方法が一番安全です。 — This method is probably the safest. - 原因は恐らくシステムの不具合です。 — The cause is likely a system defect. - 恐らく会議は予定通り行われるでしょう。 — The meeting will probably be held as scheduled. After reading each sentence, ask what job **恐らく** is doing. Is it adding, excluding, warning, emphasizing, or showing a condition? That habit makes the nuance easier to remember than a single English translation. ## Nuance of 恐らく The key nuance is **make a prediction with moderate certainty**. This matters because N2 grammar often overlaps with easier expressions. The advanced pattern usually adds formality, emphasis, restriction, or a stronger logical relationship. For example: - In formal writing, **恐らく** often sounds more precise than a casual equivalent. - Compared with **たぶん**, it has a different tone or scope even when the English translation looks similar. ## 恐らく vs たぶん Both **恐らく** and **たぶん** can express related ideas, but they are different. **恐らく**: - fits the N2 nuance explained above - often sounds more specific, formal, or emphatic **たぶん**: - is usually broader, simpler, or used in a different register - may be better in casual conversation depending on the sentence Quick contrast examples: - 恐らく明日は雨でしょう。 - Try rewriting the sentence with **たぶん** and notice whether the tone or meaning changes. ## Common mistakes with 恐らく Watch out for these mistakes: - Translating it too literally and missing the function in context - Confusing it with **たぶん** just because the English translation overlaps - Using it in casual speech when a simpler pattern would sound more natural A helpful practice method is to write one sentence with **恐らく**, then compare it with a related grammar point. Explain the difference in your own words. ## Is 恐らく on the JLPT? Yes. **恐らく** is commonly taught as **JLPT N2** grammar. That means learners should be able to: - recognize it in reading - understand its nuance in context - use it in simple original sentences For test preparation, study the grammar point in full sentences. JLPT questions usually test context, not dictionary translation alone. ## Practice questions for 恐らく Try making your own sentences with these prompts: - Write one sentence that clearly needs **恐らく**. - Write a second sentence with **たぶん** and compare the nuance. - Find a notice, article, or dialogue where this kind of meaning would be natural. ## Learning path for 恐らく To learn **恐らく** efficiently, follow a path that matches this pattern's real function. 1. First review the formation so the base structure feels natural. 2. Then compare **恐らく** with **たぶん** and the related lessons below. These recommendations are chosen from similar semantic or structural families. 3. Finally, write your own sentence where the context makes **恐らく** necessary. ## Related grammar to review next - [n4 kamo shirenai](/blog/n4-kamo-shirenai/) — review this next because it is close in meaning, form, or register - [n4 kitto](/blog/n4-kitto/) — review this next because it is close in meaning, form, or register - [n3 tashika ni](/blog/n3-tashika-ni/) — review this next because it is close in meaning, form, or register ## Learn 恐らく with Hane If you want to review **恐らく** together with the related patterns above, Hane helps you connect grammar, kanji, and vocabulary in short, focused sessions. Browse more lessons here: - [All grammar lessons](/blog/) - [JLPT N2 grammar lessons](/blog/n2/)