presumably
Presumably he missed the meeting due to traffic.
おそらく
arguably
She is arguably the best singer in the group.
論じる余地はあるが
undoubtedly
It is undoubtedly the best solution available.
疑いなく
supposedly
Supposedly the restaurant opens at 11 AM.
一般に〜とされる
conceivably
Conceivably we could finish earlier than expected.
考えられる限りでは
predictably
Predictably he arrived late again.
予想通りに
likely
It is likely to rain tomorrow.
たぶん
improbably
It is improbably that they will agree.
ありそうにない
approximately
The project cost approximately ten million yen.
おおよそ
assuredly
She assuredly knows the answer.
確実に