The prefix /in/ means not. This prefix is often used to create the negative of the root word. Other words that use /in/ to create a negative are indecision and inedible.
Suffix - ous
The suffix /ous/ is used to create adjectives. It also means in possession of or full of. Incredulous means not full of belief.
Root - cred
This root word is cred meaning belief or believable. If something is credible, it is believable. Something that is incredible is not believable or hard to believe. Incredulous means not full of belief.
Hera's orchard, also known as The Garden of Hesperides, has many magical apple trees in its fields. These apple trees provide golden apples with special magical properties.