“I dare say” in Japanese
Short answer
I dare say in Japanese is “恐らく” (osoraku). Full meaning: probably, (most) likely, in all likelihood, I suspect, I dare say, I'm afraid.
Other ways to say “I dare say” in Japanese
恐らくは
osorakuha probably, (most) likely, in all likelihood, I suspect, I dare say, I'm afraid
おそらく
osoraku probably, (most) likely, in all likelihood, I suspect, I dare say, I'm afraid
Looking for the other direction? Search any Japanese word in the Nihoner lexicon, or practise what you have learned in the learning games.