tentative title; working title
Used for a provisional title of a work (book, film, project) before the final title is decided.
The working title of the new work is 'Spring Breeze'.
Please write a tentative title on the project proposal.
The editor gave the novel a tentative title.
A working title for the movie was finally settled on.
Compound of 仮 (かり, 'temporary') and 題 (だい, 'title'). The reading かだい is a standard on'yomi combination.