whippy
From Longman Dictionary of Contemporary Englishwhippywhip‧py /ˈwɪpi/ adjective BENDlong, thin, and easy to bend new growths of whippy little sapling twigsExamples from the Corpuswhippy• Corporal punishment was used sparingly but consisted of either four strokes or six across the behind with a whippy cane.• Fallen branches littered the rides and new growths of whippy little sapling twigs poked down at head-and-shoulder height to a horseman.