Pronunciation: [ɡɹˈʌf] (IPA) 
The word "gruff" is spelled with a "g" followed by "ruff". The phonetic transcription of this word in IPA is /ɡrʌf/. The "g" is pronounced as in "goat", with a voiced velar stop. The "r" sound is a retroflex approximant, where the tongue curls back slightly. The "u" is pronounced as in "cup", with a schwa sound. The final "f" sound is a voiceless labiodental fricative, with the bottom lip touching the upper teeth.
Gruff is an adjective used to describe a person's voice, behavior, or manner as rough, harsh, or brusque in nature. It is typically associated with a deep, hoarse, or gravelly tone accompanied by a stern or abrupt demeanor. This term often implies a lack of warmth or friendliness in communication or interaction.
When referring to a gruff voice, it suggests a roughness that can be attributed to age, smoking, or simply natural vocal qualities. A gruff voice tends to sound low-pitched and may lack modulation or softness. People with a gruff voice often have a tendency to appear unapproachable or appear as though they are always in a bad mood due to their rough tone.
In regards to behavior, someone described as gruff could be seen as curt, blunt, or short-tempered in their interactions. They may appear less inclined to engage in small talk or show emotional openness, which can sometimes be misconstrued as unfriendliness or rudeness.
Overall, the term gruff typically describes someone who has a brusque manner, whether it be in voice or behavior, lacking in softness or warmth, often giving the impression of being blunt or unapproachable.
Rough or stern in manners or voice; harsh or surly.
Etymological and pronouncing dictionary of the English language. By Stormonth, James, Phelp, P. H. Published 1874.
The word "gruff" is derived from the Middle English word "gruf" or "gruffe", which originally meant rough or course. This Middle English term can be traced back to the Old Norse word "grúfr", which also meant rough or coarse. Over time, "gruff" came to describe the rough or harsh manner of speaking or behaving.
