probably probably /ˈprɑːbəˌbliː/

adverb

1. () With considerable certainty; without much doubt  ( belike [Archaic] , in all probability , probs [Informal] , in all likelihood , likely , probably , prolly [Slang] )
   with considerable certainty; without much doubt
    He is probably out of the country
   He is probably out of the country
    In all likelihood we are headed for war
   in all likelihood we are headed for war
   
2. Easy to believe on the basis of available evidence  ( believably , credibly , plausibly , probably , prolly [Slang] , tenably )
   easy to believe on the basis of available evidence
    He talked plausibly before the committee
   he talked plausibly before the committee
    He will probably win the election
   he will probably win the election