because his demon king form was only when his father possessed him meaning that during the time zeldris was in his demon king form Meliodas could not activate his demon king form since at that time the demon king has possessed zeldris.
Prefix "de" meaning down, off of.
It's a combination of the words “wife” and “man.” By the way, the original Old English word “wif,” meaning “adult female,” stuck around, but in a different form. Its meaning narrowed into the one we know today: a married woman. And the Old English word for “adult male” evolved into a simplified form.
Perform (pronounced “purr-fohrrmm”) is a verb. It means to showcase talents on a stage, for example, acting, singing, dancing, or dramatic reading. It can also mean to execute the numbered steps of a procedure or a list of tasks. Preform (pronounced “pree-fohrr-mm”) is a verb.