IPA: /bɪˈliːvəbl/
KK: /bɪˈliːvəbl/
Able to be accepted as true or real; something that people can trust or have faith in.
The story he told was so detailed that it seemed believable.
Believable → It is formed from "believe" (from Old English "beliefe", meaning to accept as true) and "-able" (meaning capable of). The word "believable" means capable of being accepted as true or credible.
Think of 'believe' as accepting something as true, and '-able' means capable of. So, believable is something that can be accepted as true.