Someone who speaks in a polite and just manner.

विनम्र भाषी

English Usage: The fair-spoken ambassador handled the negotiations with grace.

Hindi Usage: विनम्र भाषी राजदूत ने बातचीत को निपुणता से संभाला।

The quality of being courteous and eloquent in speech.

विनम्रता

English Usage: Her fair-spoken-ness won her many friends in the community.

Hindi Usage: उसकी विनम्रता ने उसे समुदाय में कई दोस्त बनवाए।