Chinese phrase
未必吧 wèi bì ba
Meaning
not necessarily
When to use it
It gives a soft way to say that something is not certain. It often responds to a confident claim and gently leaves room for another possibility.
Example dialogue
他一定会来。 tā yí dìng huì lái
He will definitely come.
他可能有事，未必吧。 tā kě néng yǒu shì wèi bì ba
He might have something to do. He will not necessarily come.