1. [ adverb ] with considerable certainty; without much doubt
Synonyms: likely in_all_likelihood belike in_all_probability

"He is probably out of the country" "in all likelihood we are headed for war"

Related terms: probable probable
2. [ adverb ] easy to believe on the basis of available evidence
Synonyms: believably plausibly credibly

"he talked plausibly before the committee" "he will probably win the election"

Related terms: incredibly probable plausible credible credible probable plausible credible
Similar spelling:   provably