Gruff (?), a. [Compar.Gruffer (�); superl.Gruffest.] [D. grof; akin to G. grob, OHG. gerob, grob, Dan. grov, Sw. grof, perh. akin to AS. rcófan to break, Z. reavc, rupture, g- standing for the AS. prefix ge-, Goth. ga-.] Of a rough or stern manner, voice, or countenance; sour; surly; severe; harsh. Addison.
Gruff, disagreeable, sarcastic remarks. Thackeray.
— Gruff″ly, adv. — Gruff″ness, n.