smooth-spoken

Clive and Hugh looked askance at the comrade they knew as a rule as a smooth-spoken, wool-gathering fellow.

He was smooth-spoken and fair of promise, but came to be regarded as an unsatisfactory person with whom to deal.

He was smooth-spoken and courteous to his equals, and generally affable, though with constraint, to his inferiors.

He was not a smooth-spoken fellow, but he did not wish to offend Lord Medenham.