Where does “完了形” come from?

完了形 (Japanese) comes from Japanese 形, from Middle Chinese 形.

完了形 (Japanese): perfect tense

Definitions

  1. perfect tense

Ancestry of “完了形”, step by step

完了形 traces back through two separate lines of ancestry.

via Japanese

StepLanguageWordMeaning
1Japanesea shape; a form; a pattern, die, or model from...
2Middle Chinese

via Japanese 完了

StepLanguageWordMeaning
1Japanese完了completion; perfect; complete, conclude
Every word from Middle Chinese Every word from Japanese