N2 — outside your level filter
おそらく
おそらくosorakuN2formal
All examples5
in all likelihood — the speaker's estimate, offered in writing or careful speech
この空模様では、午後からおそらく降るだろう。
kono soramoyou de wa, gogo kara osoraku furu darou.
By the look of the sky, it will most likely rain from the afternoon. neutral
その日程では、おそらく無理です。
sono nittei de wa, osoraku muri desu.
With that schedule, it most likely won't work. neutral
不具合の原因は、おそらく設定の誤りかと存じます。
fuguai no gen'in wa, osoraku settei no ayamari ka to zonjimasu.
The cause of the fault is most likely a mistake in the settings. formal
今年の冬は、おそらく例年より寒いでしょう。
kotoshi no fuyu wa, osoraku reinen yori samui deshou.
This winter will most likely be colder than usual. neutral
恐らく彼は、その知らせをもう受け取っている。
osoraku kare wa, sono shirase o mou uketotte iru.
He has most likely received that notice already. neutral
How it's formed4
All forms1
恐らくosorakualternant
the kanji spelling, common in print and formal letters. The kana form is the safer everyday choice.