Synonyms of 'well-spoken'
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You can refer to people who consider themselves to be socially superior and to set standards of behaviour for everyone else as polite society or polite company.
Certain words are not acceptable in polite society.
If you say that someone is refined, you mean that they are very polite and have good manners and good taste.
His speech and manner are refined.
Thesaurus for well-spoken from the Collins English Thesaurus
A well-spoken person speaks in a polite correct way and with an accent which is considered socially acceptable.