スースー

スースー, すーすーsuusuu

adverb · suru verb · noun

  1. cool sensation from passing air
  2. cool and refreshing (aftertaste)
  3. sound of air leaking
  4. sound of a sleeper's breath

Study it in Yanamino

Data from JMdict, KANJIDIC2 (EDRDG), KanjiVG, CC-CEDICT and Make Me a Hanzi. Sources and licences