Where does “스시국” come from?

스시국 (Korean) comes from Korean 스시, from Japanese 寿司, from Japanese 酸し, from Japanese し, from Middle Chinese 氏.

Ancestry of “스시국”, step by step

스시국 traces back through two separate lines of ancestry.

via Korean 스시

StepLanguageWordMeaning
1Korean스시sushi
2Japanese寿司sushi: vinegared rice served with fish or...
3Japanese酸しsour; tasting of vinegar
4JapaneseConjunctive particle. Follows items in a list of...
5Middle Chinese

via Korean 국#國

StepLanguageWordMeaning
1Korean국#國
Every word from Middle Chinese Every word from Japanese Every word from Japanese 酸し
스시국 — Etymology, Origin & Word History | Etymology Explorer