跌宕

diēdàng

跌宕 — diēdàng

uninhibited; free and unconstrained; rhythmical; undulating
这首曲子旋律跌宕，令人难忘。 zhè shǒu qǔzi xuánlǜ diēdàng lìngrénnánwàng — The melody of this piece is undulating and unforgettable.