po ‧ ten ‧ tial ‧ ly AC /pəˈtenʃ ə li/ BrE AmE adverb [+ adjective/adverb]
[ Word Family: noun : ↑ potential , ↑ potentiality ; adverb : ↑ potentially ; adjective : ↑ potential ]
something that is potentially dangerous, useful etc is not dangerous etc now, but may become so in the future:
a potentially dangerous situation