Where does “天井裏” come from?

天井裏 (Japanese) comes from Japanese 天, from Old Japanese 天, from Proto-Japonic *amay.

天井裏 (Japanese): attic

Definitions

  1. attic

Ancestry of “天井裏”, step by step

天井裏 traces back through 3 separate lines of ancestry.

via Japanese 天

StepLanguageWordMeaning
1Japanese天the sky, the heavens; the area above a kitchen...
2Old Japanese天sky, heavens
3Proto-Japonic*amay—

via Japanese 裏

StepLanguageWordMeaning
1Japanese裏back; behind; other side; inside; reverse side of...
2Japanese裏切りtreachery, betrayal
3Japanese切るto cut, to slice, to carve; cut down, fell, chop...

via Japanese 井

StepLanguageWordMeaning
1Japanese井well; well, well curb; Well
2Middle Chinese井—
Every word from Proto-Japonic *amay →Every word from Old Japanese 天 →Every word from Japanese 天 →