资料来源 : pyDict

说话温和可亲的,温和地说话的,善於言辞的

资料来源 : Webster's Revised Unabridged Dictionary (1913)

Soft-spoken \Soft"-spo`ken\, a.
   Speaking softly; having a mild or gentle voice; hence, mild;
   affable.

资料来源 : WordNet®

soft-spoken
     adj : having a speaking manner that is not loud or harsh; "she was
           always soft-spoken"