Where does “必読書” come from?

必読書 (Japanese) comes from Japanese 必 — must; necessary; without fail.

必読書 (Japanese): required reading

Definitions

  1. required reading

Ancestry of “必読書”, step by step

必読書 traces back through two separate lines of ancestry.

via Japanese

StepLanguageWordMeaning
1Japanesemust; necessary; without fail

via Japanese 読書

StepLanguageWordMeaning
1Japanese読書the act of reading; to read
Every word from Japanese