Chivalry
/ˈʃɪv.əl.ri/
Slang Meanings
Chivalry in a humorous sense, often referring to outdated behaviors.
He thinks treating women like queens is chivalry, but it's just old-fashioned.
Being overly polite to the point of being ridiculous.
His chivalry is so extreme, he won't even let her carry her own groceries.