adjective
gruff
GRUF/ɡrʌf/
Rough and harsh in voice or manner.
The gruff shopkeeper slides over the purchase without returning the customer's friendly greeting.

Etymology
Grof described physical coarseness before gruff came to describe manners. The selected meaning transfers that rough texture to a person's voice or behavior.
In context
somebody has been sitting in my chair said the great huge bear in his great rough Gruff voice
More examples
- Despite her gruff manner, the coach cares about every player.
- The driver gave a gruff reply and closed the window.
- You sound gruffer on the phone than you do in person.
Forms
gruff · gruffer · gruffest
gruffly adverb — In a rough, harsh voice or manner.
gruffness noun — A rough, harsh quality of voice or manner.