1. Not easy to believe
   "behind you the coastal hills plunge to the incredibly blue sea backed by the Turkish mountains"
   - improbably, implausibly, unbelievably 
2. Exceedingly; extremely
   - fabulously, fantastically

See also: incredible

Antonym: credibly

• champlevé
• Champollion
• Champs Elysées
• chanal
• chanar
• chance
• chance event
• chance on
• chance upon
• chance variable
• chance-half correlation
• chance-medley
• chanceful
• chancel
• chancellery
• chancellor
• Chancellor of the Exchequer
• chancellorship
• Chancellorsville
• chancer
• chancery
• chancre
• chancroid
• chancroidal
• chancrous