gruffer is gruff's Comparative Degree

gruff

US [ɡrʌf]
UK [ɡrʌf]
  • adj.态度生硬的;脾气坏的;声音粗哑的
  • Web粗暴的;粗鲁的;粗重
Comparative Degree:gruffer  Superlative:gruffest  
adj.
1.
态度生硬的,粗暴的;脾气坏的
2.
声音粗哑的