gentleman
noun
[ ˈdʒɛnt(ə)lmən ]
• a chivalrous, courteous, or honourable man.
• "he behaved throughout like a perfect gentleman"
• a polite or formal way of referring to a man.
• "opposite her an old gentleman sat reading"
Origin:
Middle English (in the sense ‘man of noble birth’): from gentle1 + man, translating Old French gentilz hom . In later use the term denoted a man of a good family (especially one entitled to a coat of arms) but not of the nobility.