By nature taciturn, he now merely growled occasionally like a bear, and glared contemptuously upon the "beggar," who, being somewhat of a man of the world, and a diplomatist, tried to insinuate himself into the bear’s good graces.
There are no more uses of "taciturn" in the book.
Show samples from other sources
She is taciturn by nature, but people like her once they get to know her.
She’s a bit taciturn by nature, but before breakfast you’d think she is deaf and mute.