Inclined to growl; having a rough, low, rumbling voice or quality; characterized by grumpiness.
From the verb 'growl' plus the adjectival suffix '-y' (from Old English), which creates adjectives meaning 'having the quality of' or 'full of.'
Animals and grumpy people aren't the only things that can be growly—a growly voice is actually prized in music and audio production because it carries emotional weight and depth.
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