Chekmar held in leash three formidable wolfhounds, who had, however, grown fat like their master and his horse.
"Oh, what a formidable one!" said he.
"A formidable one, eh?" he asked Daniel, who was standing near.
He talked boldly and naturally, and Natasha was strangely and agreeably struck by the fact that there was nothing formidable in this man about whom there was so much talk, but that on the contrary his smile was most naive, cheerful, and good-natured.
There are no more uses of "formidable" in the book.