possibly
adverb
[ ˈpɒsɪbli ]
• perhaps (used to indicate doubt or hesitancy).
• "he found himself alone, possibly the only survivor"
Similar:
perhaps,
maybe,
it may/could be,
it is possible,
it is conceivable,
for all one knows,
feasibly,
very likely,
hopefully,
God willing,
happen,
peradventure,
perchance,
mayhap,
haply,
percase,
• in accordance with what is likely or achievable.