Maybe, possibly (9)
I believe the answer is:
perchance
I believe this is a double definition.
'maybe' is the first definition.
(synonyms)
'possibly' is the second definition.
(synonyms)
(Other definitions for perchance that I've seen before include "Maybe (to dream? - Hamlet)" , "'To sleep: -------- to dream:' Hamlet" , "As it may happen" , "possibly" .)