communicative

“No; he is not a man that it is easy to draw out, though he can be communicative enough when the fancy seizes him.”

Sherlock Holmes was not very communicative during the long drive and lay back in the cab humming the tunes which he had heard in the afternoon.

There was nothing of presumption or folly in Bingley that could provoke his ridicule, or disgust him into silence; and he was more communicative, and less eccentric, than the other had ever seen him.