siscon means strong attachment or attraction to one's own sister. Lexicurio rates it Sui generis — a strength score of 87 out of 100.
siscon is pronounced /ˈsɪs.kɒn/.
Etymology
Borrowed from Japanese シスコン (shisukon), from シスターコンプレックス (shisutā konpurekkusu, “sister complex”), itself borrowed from English sister complex. By surface analysis, sis (“sister”) + -con (“abnormal sexual attraction”).
noun
- Strong attachment or attraction to one's own sister.“What's up with Da Capo? Siscon and lolicon in episode 1, a catgirl later -- is the target market fetishists?”
- A person with such an attachment or attraction.