お
 
そ
 
ら
 
く

adverb

Usually written with kana alone. Oft. used when predicting a negative outcome.
  1. probably, (most) likely, in all likelihood, I suspect, I dare say, I'm afraid.

Variations

Pronunciation Kanji Kana Is Common
 
お
 
そ
 
ら
 
く
おそらく ✔
おそ
恐
 
ら
 
く
恐らく おそらく ✔