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Synonyms for Zippy (same or very similar meaning)

WordNet sense 1 (quick and energetic):
brisk, merry, rattling, snappy, spanking

WordNet sense 2 (possessing or exerting or displaying energy):

WordNet sense 3 (marked by lively action):
bouncing, bouncy, peppy, spirited

WordNet sense 4 (full of life and energy):

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