adverb
as expected; sure enough; just as one thought
Used when a result or situation matches prior expectation, often with a tone of confirmation or mild surprise that things turned out as predicted.
果たして、彼は約束の時間に現れた。
Sure enough, he showed up at the promised time.
果たして、天気予報通り雨になった。
Just as expected, it started raining as the forecast said.
adverb
Used in questions or hypothetical statements to express doubt, curiosity, or to emphasize the uncertainty of a proposition. Often translates to 'really' or 'ever' in English.
果たして彼は成功するだろうか。
Will he really succeed, I wonder?
果たしてそんなことが可能なのか。
Is such a thing actually possible?