Based on: wahrscheinlich
A fun look at the meaning of ‘der Schein’ and the verb 'scheinen' what sunshine has to do with appearance and money #mindblow.
der Schein, scheinbar, Geldschein, Sonnenschein, scheinen, glänzen, leuchten
wahr, die Wahrheit, wahrscheinlich, unwahrscheinlich
The core idea of this root was:
The main English offspring is to shine and all its relatives. The only other family members I could find were shimmer and scintillate.
In German, it’s also the origin of Schimmel (the mold) because that is often white and shiny.