Akademik

credibly
adverb
easy to believe on the basis of available evidence
-

he talked plausibly before the committee

-

he will probably win the election

Syn: ↑believably, ↑plausibly, ↑probably
Ant: ↑incredibly
Derived from adjective: ↑probable (for: ↑probably), ↑plausible (for: ↑plausibly), ↑believable (for: ↑believably), ↑credible

Useful english dictionary. 2012.