Today we have the third sound from the third column of the chart. Su is represented by す in hiragana, and ス in katakana.
Suii (すいい) came up repeatedly when I was translating the environmental white paper website. It means ‘change’, ‘transition’, ‘progress’, or ‘process’ and can be written in kanji as 推移.
Sukinshippu (スキンシップ) has been mentioned a lot lately as well. It is the katakana pronunciation of “skinship”, which is the creative way to say “physical contact”. After writing this article, I heard a mother using this term to describe her child’s feeling when they were separated too often. Before that I had thought it was more of a scintillating term for adults, but it seems that it is for any kind of physical contact.