Tra từ affluent - Từ điển Oxford Advanced Learner 8th

af·flu·ent BrE [ˈæfluənt] NAmE [ˈæfluənt] adjective (formal)
having a lot of money and a good standard of living
Syn: ↑prosperous, Syn: ↑wealthy
•affluent Western countries
•a very affluent neighbourhood
Derived Word: ↑affluence

Word Origin:
[affluence affluent] late Middle English (in the sense freely flowing): via Old French from Latin affluent- ‘flowing towards, flowing freely’, from the verb affluere, from ad- ‘to’ + fluere ‘to flow’.

Synonyms:
rich
wealthy • prosperous • affluent • well off • comfortable
These words all describe sb/sth that has a lot of money, property or valuable possessions.
rich • (of a person) having a lot of money, property or valuable possessions; (of a country or city) producing a lot of wealth so that many of its people can live at a high standard
wealthy • rich
rich or wealthy?
There is no real difference in meaning between these two words. Both are very frequent, but rich is more frequent and can be used in some fixed phrases where wealthy cannot: He's stinking/filthy wealthy. ◇ It's a favourite resort for the wealthy and famous.
prosperous • (rather formal) rich and successful.
affluent • (rather formal) rich and with a good standard of living: ▪ affluent Western countries
prosperous or affluent?
Both prosperous and affluent are used to talk about people and places. Prosperous is used much more than affluent to talk about times and periods. Affluent is often used to contrast rich people or societies with poor ones. Being prosperous is nearly always seen as a good thing: ▪ It's good to see you looking so prosperous. ◇ It's good to see you looking so affluent.
well off • (often used in negative sentences) rich: ▪ His family is not very well off.
The opposite of well off is badly off, but this is not very frequent; it is more common to say that sb is not well off.
comfortable • having enough money to buy what you want without worrying about the cost: ▪ They're not millionaires, but they're certainly very comfortable.
a(n) rich/wealthy/prosperous/affluent/well-off family
a(n) rich/wealthy/prosperous/well-off man/woman
a(n) rich/wealthy/prosperous/affluent country/city

Example Bank:
•The affluent Western countries are better equipped to face the problems of global warming.
•They live in a very affluent neighbourhood near the park.