IPA: /kæˈdæv.ə.rəs.li/
KK: /kædˈævərəsli/
In a way that resembles a corpse; looking very pale or thin, often due to illness or lack of nourishment.
He looked cadaverously pale after the long illness.
Cadaverously → It is formed from "cadaver" (from Latin "cadaver", meaning dead body) and the suffix "-ously" (meaning in a manner of). The word "cadaverously" describes something done in a manner resembling a corpse or dead body, often implying a pale or emaciated appearance.
Think of the word 'cadaver' which means a dead body, and remember that 'cadaverously' describes something that resembles a corpse.