possibly
[adverb]
Synonyms: perhaps, maybe, perchance (archaic)

[TahlilGaran] English Synonym Dictionary ▲

pos‧si‧bly S1 W2 /ˈpɒsəbli, ˈpɒsɪbli $ ˈpɑː-/ adverb
[Word Family: noun: possibility ≠ impossibility, the impossible, possible; adverb: possibly ≠ impossibly; adjective: possible ≠ impossible]

1. used when saying that something may be true or likely, although you are not completely certain Synonym : perhaps, maybe:
This last task is possibly the most difficult.
It will take three weeks, possibly longer.
‘Will you be here tomorrow?’ ‘Possibly.’
‘Was it murder?’ ‘Quite possibly (=it is very likely).’

2. spoken used to emphasize that you are very surprised or shocked by something, or you cannot understand it:
How could anyone possibly do such a thing?

3. could/can you possibly spoken used when making a polite request:
Could you possibly close that window?

4. used to emphasize that someone will do or has done everything they can to help or to achieve something:
We shall be contributing as much as we possibly can to the campaign.
Doctors did everything they possibly could to save his life.

5. used to emphasize that you cannot do something, or that something cannot or could not happen or be done
can’t/couldn’t possibly
I can’t possibly allow you to go home in this weather.
She couldn’t possibly have heard what was said.

[TahlilGaran] Dictionary of Contemporary English ▲