gen‧tle‧man S2 W2 / dʒentlmən / 名词 ( 复数形式 gentlemen / -mən / ) [可数名词]
1 a polite word for a man, used especially when talking to or about a man you do not know → lady :
Could you serve this gentleman please, Miss Bath?
Good morning, ladies and gentlemen .
An elderly gentleman was asleep next to the fire.
2 a man who is always polite, has good manners, and treats other people well → lady :
Martin – always the perfect gentleman – got to his feet when my mother walked in.
Mr Field was a real gentleman .
3 old-fashioned a man from a high social class, especially one whose family owns a lot of property → lady :
an English country gentleman
THESAURUS
man an adult male human : a young man | Sir Edmund Hillary was the first man to climb Mount Everest.
guy ( also bloke/chap British English ) informal a man : She’d arranged to meet a guy in the bar. | Alex is a really nice bloke.
gentleman formal a man – used as a very polite way of talking about a man : an elderly gentleman | Please could you serve this gentleman?
boy a young male person, usually a child or a teenager : a teenage boy
lad old-fashioned informal a boy or young man : When I was a young lad, I wanted to join the army.
youth a teenage boy or young man – used especially in news reports to show disapproval : Gangs of youths roam the streets.
male formal a man – used especially by the police or in science and research contexts. The 形容词 male is much more common than the 名词 : We are investigating the death of an unidentified male. | The condition is usually found only in males.
dude American English informal a man - a very informal use : You could tell there was something creepy going on with that dude.