gruff

Concise Oxford English Dictionary © 2008 Oxford University Press:
gruff/ɡrʌf/

▶adjective

• 1 (of a voice) rough and low in pitch.

• 2 abrupt or taciturn in manner.

– derivatives
gruffly adverb,
gruffness noun.

– origin C15 (in the sense ‘coarse-grained’): from Flemish and Du. grof ‘coarse, rude’, of W. Gmc origin.