From Longman Dictionary of Contemporary Englishwell-spokenˌwell-ˈspoken adjective SPEAK A LANGUAGEspeaking in a clear and polite way, and in a way that is considered correct
Examples from the Corpus
well-spoken• Both victims were attractive, long-haired and well-spoken.• Clearly well-spoken female gardeners were not the usual clientèle of this hospital. 