What is the difference between "おそらく" and "恐らく"?

"おそらく" means "probably, perhaps, most likely" (N3), whereas "恐らく" represents "perhaps, probably, maybe" (N2).

Kanji Homophone Battle

Pronunciation Trap: "おそらく (osoraku)"

Same sound, completely different Kanji! Choose the right conceptual writing.

Kanji Option A

おそらく (osoraku)

N3 / CEFR

Kanji Option B

おそらく (osoraku)

N2 / CEFR

In Japanese, many words share the exact same pronunciation "おそらく (osoraku)" but are written with different Kanji, changing the meaning entirely.

おそらく (Level: N3): Translates to "probably, perhaps, most likely" and is used when An adverb indicating a high degree of probability but not certainty. Often used with だろう or でしょう at the end of the sentence..
恐らく (Level: N2): Maps to "perhaps, probably, maybe" and carries the nuance of Indicates a high probability or likelihood. It's similar to 「たぶん.

Mixing these up can easily result in unnatural writing. Look at the bilingual context cards below to master the conceptual boundaries!

Bilingual Context for "おそらく"

明日はおそらく晴れるでしょう。

It will probably be sunny tomorrow.

Bilingual Context for "恐らく"

明日は恐らく雨が降るだろう。

It will probably rain tomorrow.

Which Kanji perfectly fits this blank space?

Which Kanji perfectly fits the blank: "明日は＿＿＿晴れるでしょう。" (Meaning: "It will probably be sunny tomorrow.")

🎉 Correct Answer!

Correct! "おそらく" is used for "probably, perhaps, most likely" in the context: "It will probably be sunny tomorrow.".