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gruff [gruffer, gruffest]▼◼◼◼ adjective[UK: ɡrʌf] [US: ˈɡrəf]
grum▼ adjective[UK: ˈɡrəm] [US: ˈɡrəm]
gruffly▼ adverb[UK: ˈɡrʌ.fli] [US: ˈɡrʌ.fli]
grumly▼ adjective[UK: ɡrˈʌmli] [US: ɡrˈʌmli]