na-adjective, adverb
bouncy; jiggly
Onomatopoeic word describing a soft, elastic bouncing motion, especially of breasts. Often used in casual or colloquial contexts.
彼女が歩くたびに胸がたゆんたゆん揺れている。
Her breasts bounce jiggly every time she walks.
このゼリーはたゆんたゆんで、食べると楽しい。
This jelly is bouncy and fun to eat.