Adverb
not easy to believe
in an unbelievable manner
Source: WordNetIt always takes awfully long time to understand unbelievably simple things. Joe Chung
Human nature is almost unbelievably malleable, responding accurately and contrastingly to contrasting cultural conditions. Margaret Mead
If you have ever been robbed by a black teenage male, you know how unbelievably fleet-footed they can be. Ron Paul
I'm a geeky toy collector, and to have toys of your own characters is unbelievably cool. Craig McCracken
There are so many artists that are dyslexic or learning disabled, it's just phenomenal. There's also an unbelievably high proportion of artists who are left-handed, and a high correlation between left-handedness and learning disabilities. Chuck Close
Somewhere, someone isn't impressed by your looks. Not all men jump through the hoops of your fire. You're unbelievably boring to more people than you'll ever know. Henry Rollins