スースー
sūsū

Adverb
Suru Verb

1. cool sensation from passing air; cool and refreshing (aftertaste)

Onomatopoeia
Noun

2. sound of air leaking; sound of a sleeper's breath

スープを むときスースーいう おとをたててはいけない。
sūpuo nomu toki sūsū iu otō tatetewa ikenai.
When you drink soup, don't make any slurping sound.
Other forms: