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Synonyms for Vibrant (same or very similar meaning)

WordNet sense 1 (vigorous and animated):
vivacious

WordNet sense 2 (displaying animation, vigor, or liveliness):
spirited

WordNet sense 3 (having a tendency to reverberate or be repeatedly reflected):
reverberant

WordNet sense 4 (having striking color):
colourful


From the ODE community, based on WordNetadd/edit