Making a loud, deep sound like thunder or a lion, or intensely active and successful.
From Old English 'rarian,' imitative origin—the word literally sounds like the noise it describes. Related to Germanic 'rēren.'
The roaring twenties actually got its name from both the loud jazz age music AND the economic success—people were literally shouting about prosperity!
Complete word intelligence in one call. Free tier — 50 lookups/day.