Synonyms for Resilient (same or very similar meaning)
WordNet sense 1 (displaying animation, vigor, or liveliness):
spiritedWordNet sense 2 (elastic; rebounds readily):
bouncy, live, lively, springy, liveWordNet sense 3 (capable of resuming original shape after stretching or compression; springy):
elasticFrom the ODE community, based on WordNetadd/edit