What is the meaning of Demean?

To debase; to lower; to degrade.

To humble, humble oneself; to humiliate.

To mortify.

To manage; to conduct; to treat.

To conduct; to behave; to comport; followed by the reflexive pronoun.

Management; treatment.

Behavior; conduct; bearing; demeanor.

demesne.

resources; means.

To subtract the mean from (a value, or every observation in a data set).

Source: wiktionary.org