Antonyms of adv unbelievably

2 senses of unbelievably

Sense 1
incredibly, improbably, implausibly, unbelievably -- (not easy to believe; "behind you the coastal hills plunge to the incredibly blue sea backed by the Turkish mountains")
       Antonym of believably (Sense 1)
      => believably -- (in a believable manner; "he acted believably sincere")

Sense 2
unbelievably -- (in an unbelievable manner; "he was unbelievably angry")
       Antonym of believably (Sense 1)
      => believably -- (in a believable manner; "he acted believably sincere")

Synonyms of adv unbelievably

2 senses of unbelievably

Sense 1
incredibly, improbably, implausibly, unbelievably -- (not easy to believe; "behind you the coastal hills plunge to the incredibly blue sea backed by the Turkish mountains")

Sense 2
unbelievably -- (in an unbelievable manner; "he was unbelievably angry")