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adjective
deep and harsh sounding as if from shouting or illness or emotion
"gruff voices"
"the dog's gruff barking"
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adjective
brusque and surly and forbidding
"gruff manner"
"a gruff reply"
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growling
a gruff or angry utterance (suggestive of the growling of an animal)
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grunt
the short low gruff noise of the kind made by hogs
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oink
the short low gruff noise of the kind made by hogs
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gruffly
in a gruff manner