しゅんしゅんMeanings1adverb, adverb taking the 'to' particlewith a whistle; whistlinglyonomatopoeic or mimetic wordDescribes the high-pitched whistling sound of steam escaping, as from a kettle or a pressure cooker. Often used with と.やかんがしゅんしゅんと音おとを立たてている。The kettle is whistling.