Self-deprecation is the act of reprimanding oneself by belittling, undervaluing, or disparaging oneself, or being excessively modest. It can be used in humor and tension release.

What is self depreciated?

belittling or undervaluing oneself; excessively modest. Also self-dep·re·ca·to·ry [self-dep-ri-kuh-tawr-ee, -tohr-ee, self-].

What is a deprecating?

: tending or serving to disparage or belittle someone or something a deprecating remark Allagash tells you, with a deprecating roll of his eyes, that Vicky is studying Philosophy at Princeton.—