IPA: /sɪˈnɪəriəs/
KK: /sɪˈnɪrɪəs/
Having a gray color that is mixed with black, similar to the color of ashes.
The cinereous feathers of the bird made it blend in with the rocky landscape.
Cinereous is derived from "cinis" (meaning ash) in Latin, combined with the suffix "-eous" (meaning having the quality of). The word describes something that has the quality or appearance of ash, typically a grayish color.
Think of 'ash' ('cinis') to remember that 'cinereous' refers to something that looks like ash, often gray in color.