Adverbial possibly has 4 senses
  1. possibly, perchance, perhaps, maybe, mayhap, peradventure - by chance; "perhaps she will call tomorrow"; "we may possibly run into them at the concert"; "it may peradventure be thought that there never was such a time"
  2. possibly, potentially - with a possibility of becoming actual; "introducing possibly dangerous innovations"; "he is potentially dangerous"; "potentially useful"
    Derived from adjective possible2
  3. possibly - in a manner or to a degree possible of conceiving; "is it possibly true?"
    Antonyms:
    impossibly
    Derived from adjective possible3
  4. possibly - to a degree possible of achievement or by possible means; "they can't possibly get here in time for the funeral?"
    Antonyms:
    impossibly
    Derived from adjective possible1
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