1) Animated 2) Elastic 3) Energetic and springy 4) Full of energy 5) Like a four square ball 6) Like a Super Ball 7) Like a trampoline 8) Like pogo sticks 9) Like trampolines 10) Live 11) Lively 12) Marked by lively action 13) Pliable 14) Rebounds readily 15) Resilient 16) Soft 17) Spongy 18) Springy Found on https://www.crosswordclues.com/clue/bouncy
tending characteristically to bounce or bounce well: An old tennis ball is not as bouncy as a new one. · resilient: a thick carpet that is bouncy underfoot. · animated; lively: a bouncy personality. Found on https://www.infoplease.com/dictionary/bouncy