gruff

1 ENTRIES FOUND:
gruff /ˈgrʌf/ adjective
gruffer; gruffest
gruff
/ˈgrʌf/
adjective
gruffer; gruffest
Britannica Dictionary definition of GRUFF
1 
: rough or very serious in manner or speech
2 
of a voice : low and rough

— gruffly

adverb

— gruffness

noun [noncount]